A lot of good advice so far. Especially what NO1SY had said about your ADHD not being your personality.
I will say this too, and I hope you glean some meaning from it: Your mental health is not your fault, but it is your responsibility.
In other words, never blame yourself for your condition. Know that it is not your be-all-end-all. Understand that it is a part of you, but that it does not control you. No medical condition, mental or otherwise, gives you the excuse not to take charge of your own life. It is something else you must handle, true. But handle it you can, and you will.
For my own part, I'm an epileptic. I take precautions and medication to control it. It affects my life, but it doesn't dictate my life. I am still me, even if I have to do some things or not do others in order to deal with it. I am in control of myself, first and foremost. Do are you, despite what society might imply.
Getting off social media when you see that it doesn't make you happy is a very good move actually. You feel like you're out of the loop only because you, like most people on the internet, have been systematically convinced that social media is the only way to exist online. Again, this is not your fault. We are all influenced by these media giants in ways we didn't sign up for. It rots people's brains, so if you get the impression that people behave stupidly and ugly in Facebook and the like, then I would say you're thinking a lot more sanely than they are.
Remember that the internet is vast, and is entirely what you make of it. You can always go to polygon's or Eurogamer's websites directly if you want gaming news. If you want to buy something, you can go directly to the manufacturer's website instead of Amazon. If you want to talk to a friend, then your phone still has text messages and voice calling. Go to actually news sites instead of getting random headlines though your Twitter feed. If you want to talk to people about a specific subject, then humble forums like ours still exist. You are in control of how you interact with the internet. Don't be lead to believe that convenience is the best thing.
Finally, I will say that as a Chevy Cruz driver myself, that you're getting a nice little car. Just be sure to keep up on the maintenance, because regardless of what vehicle you get, regular maintenance will cost you a lot less time, money, and headache than waiting until everything goes wrong at once.
There's a mental health metaphor in there somewhere, lol.