I'm 21 years old, I failed college, and I can't afford to go back
How do you feel about not going to college?
I don't have friends who can get me to go back to school
It's not good to fail at college, but it is understandable that some people just aren't quite ready to commit to classes.  The friends you have will support you, and if you can, you can work and save, and maybe try again later.
I always loved technology. Lots of jobs out there for me since you don't have to go to school.
Your life would be easier if you had a degree. That said, finding a technology job is not a bad back-up plan.