I mean... as an autistic person, when your only statement is "I've done this, this, and that. Nobody understands!" Your statement is very critically missing anything to do with what people are failing to understand, or what you're trying to accomplish. Autism can be hard, but complaining about this as an issue while not actually demonstrating an issue, and actually demonstrating a complete non-issue, is not going to get any help for yourself.
All you have specificied here is that you:
Do things
Aren't understood
What are we supposed to get out of that? Sure, nobody is understanding, but you've given nothing to interpret or understand.
If you have issues saying what you have issues with, I can relate, that is something I deal with. Expressing yourself can be hard. What makes it harder is not trying to express anything, because that "expressing" is hard. Express anything, even if it isn't perfect or close to what you're thinking, because at least you can hear yourself say it and think "oh, yea that is NOT it." Eventually you'll be left with whatever it is.