I remember when I was 15 years old and failing high school.
I had no fucking idea what I wanted to do with my life in terms of jobs and careers.
I'm 29 right now. I've had factory jobs. I hate factory work. What kind of career should I take up? I don't feel very confident in my abilities either.
almost too obvious to even say but learn some programming and get a low level programming job
There are tech schools. You don't have to be a programmer if that's not your thing.
Get a commercial driver's license (CDL). Get trained as a welder. There's also being like a med tech or something related.