Trying to get a job is a humiliation ritual

Most of the time I try to get a job it results in me being an intern for a couple of days, trying to do my best and then them turning me down seemingly for no reason, sure i may not have done the best work and made some mistakes but isn't it a part of the internship? To learn and learning means making mistakes. That probably sounds immature and i should probably deal with that like everyone else seemingly does but i can't. I genuinely don't understand. If they could at the very least tell me what i did wrong so it's not a completely fruitless experience, so i could grow in a way. And it happens all the time. At this point it's definitely me who's the problem and it feels like it'll be a constant obstacle in my life that i have no way of dealing with and everything else in my life doesn't help either. Has anyone else been feeling like this? I don't know what to feel exactly.

This post probably serves more as letting my feelings out than anything. I don't think this problem is fixable for me, that's the way i am