You are the most qualified person to diagnose yourself since you’re the only one that knows what happens on the inside which is where autistic symptoms predominantly are.

Neurotypicals lump themselves to early with autism and autistic people do it too late since they feel the criteria is very strict. Think NT saying “yes, I have autism because…” and autistic people say “no, I don’t because of…”.

Honestly, just take some tests and use them as a screening tool and take it from there. Good luck!