The interwebs is a mysterious place, full of dark dark dangers and magnificent memes. It can be a scary place, yes. It is a scary place if you're not careful, but it can also be amazing, especially if say you want to be a mangaka, an animator, a game developer, a musician. Heck, a professional mime, or if you want to a professional tea-taster.
I'll argue this in context of MR to make the choice small, but really when you come here we're not going to 'judge' you for anything other than what you post and how you interact with us.
You can avatar the heck out of yourself and be the craziest personality and try out all the projects you're scared of or not confident of because heck it's the internet and you really are free.
You should appreciate this: You can connect with minds across the world, get access to cool and friendly people and practical knowledge to stuff that'll fuel your dreams, all without having to deal with people judging you for your facial expression or how you look or what you're wearing (nothing against cleaning your room and taking out the trash, though. That stuff is more important than you'd think)
Honestly, you can get all the wins without any losses. It's like a grand roleplaying game where you can define yourself and put a healthy barrier between your goals and your self. Even though it's never easy, you can get the critique you need without needing to feel as bad as you could about it if it was say face to face. And best of all, you can have fun with it.
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To prove my point. I'll just give you some shameless plugs of my personal experience first
1. Roleplaying with a random group on Deviantart for some months when I was personally 'irl' rock bottom as an awesome magician. I made so much RP related art that year that I not only got to have a nice escape and feel good times and make at least two long lasting relationships with friends I still email now, I got to practice art and animation on the side because I dived into some niche groupe somewhere.
2. The MR Canon. I've had at least 5 moments in my life where I'm completely engrossed in my writing experience while listening to music and thinking up scenarious and planning, drawing and writing stuff all because I came up with a weird internet persona and met other people willing to play with that sort of thing. This is sort of like the above example, I guess, but no, both experiences were uniquely diverse and different enough that I could mention them separately.
3. Drawing a 5 minute one punch man fanart on reddit, I got 54 likes (yeah yeah, puny number in comparision to the greats but i liked it, OK?) and felt like a boss. On mspaint. When I was feeling lazy.
If you're on the internet trust me you can find enough people who are interested in the stuff that you like that you can comfortably screw around, have fun and have some fun experiences.
Actually I've only mentioned the super rosy and happy experiences that I've had. I actually value the frustrating annoying moments and critiques that I took personally more because they have definitely opened my eyes to my life as a pseudo artist, writer and green alien cat in general. Definitely don't like it in the moment, but later down the line I realize how lucky I've been.
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This is where I sound like a wiki article and give you tips/suggestions on how to bank on internet anonymity
1. Why not join a not-so-popular webcomic site and start your crazy webcomic idea? It can literally be one panel that says 'I want to be a mangaka! But I don't know how! So I'll just start a random webcomic and see how that works out!' Literally nothing is stopping you from this.
2. Have you ever tried to critique a random comic/story that NOBODY knows about online? Looked for the latest post in a forum/ on a comic site and tried to really dive into a story made by a fellow human who is just starting out, and tried to seriously write out a review about it? Trust me, the thing that'll bring you further on the large waves of the interwebs is realizing that even though there are billions and billions of posts and opinions, behind every single one is a human being and if you sacrifice your time to give careful though and feed excitement to someone's project you'll only get better as a person. Trust me, it's worth the random meeting.
3. Why not try making a gif/meme out of a scene out of your favourite tv show? Trust me. 5 googles later (and some downloads maybe) you'll be able to make a gif for a TV show and post it on the interwebs and trust me memes are immortal therefore you are immortal.
4. You can literally start a podcast/youtube channel right now documenting how you are progressing with your art/writing life. (I'll elaborate on this later because this ties into the concept of nobody gives a damn/ not giving a damn and how that can work for you, but yeah)
5. Ask questions. Nothing beats asking questions. There's a different between Googling information and asking for knowledge on something. Because otherwise what's the point of conversation?
6. Post your top 10 most listened to music/ your top 10 anime / your top 10 writing instruments.
7. Write a lightnovel using only cliches
8. Post a story idea with a beginning and end and let people talk about it.
9. Make a playlist for your favourite manga/anime
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In general, I just think people get too hyperfocused on the more statistical side of the internet (likes, dislikes, tweets, retweets, reposts) that they forget that it is a free market world where you can do a lot of stuff and enjoy a lot of things according to your own interests and likes no matter what skill level you are or how your objective day to day life is doing. Of course people will miss you if you are gone for months at a time and there is no avoiding having your own opinion on things no matter how much you 'fake' your online persona. But in the end you really do have a grand chance to be detached enough to tackle problems and approach situations in a way you never really would irl.
Depending on how comforatble you feel you can remove more of your anonymity over time, but otherwise you can use it to your fullest.
This is most definitely incoherent bull. But it is my 2 cents of incoherent bull.