I'm 21 soon to be 22 in November. Struggle building structure in your life at this stage it's really difficult. And I can assure you that you are not alone, I'm still working towards that.
Getting a normal job for a while is not as bad as it seems, for me it motivates me to be less of a doormat to people since you are able to be independent.
All hopes from here and don't burn yourself , like I did when I was 18.
Caused a lot of trauma by judging myself for not being good enough when so many people younger than me achieved so much.