>>1013702 (OP)Same reason anyone can't do something, Anon. You tried, weren't good at it, and then threw your hands up and effectively gave up.
It's a part of having autism. Unironically though, not as like some random insult. This is a thing autistic people do where they wallow in their own inability and self-sabotage by only giving half attempts at the thing they're not actually that interested in, and wondering why they can't improve. It's the same reason you "Can't" roleplay, or write, or do any of those things you wanna do.
You have separated the idea of effort getting results, and find a bit of comfort in just declaring that you can't do something because it's better than the alternative, which is acknowledging that the amount of effort you thought was acceptable for improving, wasn't actually enough.
The actual way to improve is to press yourself and draw/RP/etc, better today than you did yesterday, and you keep doing that until you actually improve. Not just, "Do as good as you can" and then rage about it online for the rest of the day.
It's probably time you abandon this knee jerk habit of being mad that you're not making fantastical art and great RPs out the gate, and either actually try, or stop dwelling on it and go do what you're actually interested in. You surely have an autistic obsession somewhere that's not about being a great artist.