Access courses are available.
My DD1 took one because she didn't get the grades at A level that she needed - one year attending a different college, meeting other people and she got onto the same course she originally wanted and ended up with a first class honours.
DD2 wasn't interested in A levels, did a BTEC, got into university with that, has just completed her Masters and is now planning several different paths to see the best way for her to get her PhD. She has AuDHD.
There are apprenticeships, BTECs/vocational qualifications and work with training. All of these are perfectly valid routes.
For me, I did A levels, had a baby (not planned), failed an access course, worked, claimed benefits, had another baby, took Open university courses, got my qualifications that way and now have a bunch of professional qualifications that cover a sheet of A4 if I list every certificate awarded. So they took a less convoluted route than I did, but still didn't progress in that linear way that is assumed to be the only route to the future.
You're 19. This is not the rest of your life permanently destroyed; it's the start of your future, and it can take many different routes - the more obvious path isn't always the one we take. Rather than running blindly into the distance, stop, breathe, think and look for the less obvious paths.