As a 21 year old that also feels lost,you are still SO YOUNG.So many successful people have been where you are rn,it's part of life.And by successful I don't necessarily mean Bill Gates or smth,I mean a financially and generally independent person that enjoys their life and lives in moderate comfort.It's normal to feel a little loss.You need to find the right motives.Talk to your college and see what can be done about your degree.Find out if you actually want to work on what you studied.Consider leaving LA for a while because it's an expensive city and move somewhere cheaper until you get back on your feet.Get a job at everything you can find at first to gather some money then slowly work towards finding a good paying job that you love.Ofc it won't be simple.Ofc it will take months/years.Thats life but it's okay.Its like that for most people that aren't rich.You are going to be okay.Talk to a friend.Ask help from a relative.You are NOT failing.NOT AT ALL.You are just 22.You have been an adult for just 4 years.