Am I missing something that everyone else has?

People say ADHD is playing life on hard mode.

I feel my life is completely unplayable. I'm at level 22 and I've leveled up a grand total of zero skills. Its like Ive unlocked everything but I simply have hundreds of skills all at level 1, or 2, at most.

Sorry for the gaming lingo I just found it easier to explain.

I stopped being able to retain info and build solid foundations just before I became a preteen.

Everything else Ive learned or done since then came from my bouts of hyperfixations.

I feel like this is more than just ADHD. Something is wrong with my brain, or my body.

How do I fix this?