Typos Although "I" doubt U would wsnt to resd or listen to anything I have to say...
To answer your title's question,
U can't do anything right, for the same reasons NONE of us can.

It's not what's right or wrong in our lives, and especially not any conclusions we come to when comparing ourselves to otherd---> Happiness and success in life is solely based on how we react to things and/or how we choose to perceive ourselves (and others).

Everybody fails at some (or many) things, but those who seem happiest and most content are those who,
start trying to get something positive from their failures, instead of wasting time dwelling on and beating themselves up for it.

Btw, when responding to anybody here, I usually will try to learn sometjing about them before responding (their profile or prior posts); But today I'm not going to do that,
and instead want to suggest
a quick exercise for you to do:
--- > Count how many times you wrote "I" (or "my/me") in your post (and your other posts if you have time to).
Then ask yourself if it seems to you, # of "I's" is excessive?

Tip: There is no right or wrong answer to this exercise (number of times a person writes or says the word "I", but it sometimes provides insight into why they R feeling the way they do (perception)
I'm sure your feeling that you "can't do anything right", (that others can/do), is only your perveption, and not what others think too.

Btw, if I was more cunning, manipulative, able to lie better, and thought more about myself "I" wouldn't be in the disastrous life situation I've been stuck in for years--So everything is based on perception, and even bad personality traits, can be deemed a pisitive, when utilized wisely.
=Conclusion: I'm stupid, inferior and (also) can't do anything right-- but I'll take my own advice now, and instead of beating myself up, figure how I can change my actions in the future.
Good luck and take care of your joyful spirit, because if u don't, nobody else will, and without JOY in your LIFE , T-h-e-r-e I-S N-o-t-h-i-n-g.