40-50% seems high, even for a 28yo, but I don't know your situation. I find job hunting to be horrific, despite always doing well in interviews.
The reason I do well is because I target the job I want, then mask and overprepare like an absolute psychopath for however long it takes .. so I wouldn't necessarily recommend that.
I'm mostly on the other side of the desk these days, and interviewing other people has revealed a lot about the process. One thing I learned (about senior-level knowledge workers, at least) is that people are often looking for a good fit as much as a person's capability.
I don't know what industry you're in, I've been in frontend development and now UX design, and many designers fail to demonstrate soft skills - flexibility of process, communication, emotional intelligence, etc. That doesn't make up for everything, and some ND individuals find that very hard, but it can be learned.
My point is, I've seen many good people miss out because they misjudge how they're being assessed.