Feeling empty and not sure what to do

Hi, I (20,F) have been feeling this weird feeling for like as long as i could remember. I’m not sure how to describe it, its like an emptiness but not really empty because i still feel sad. It normally happens at the end of the night when im all alone, and, its almost like an uncomfortable feeling I get being alone and bored. I used to take antidepressants but i tried to overdose on them and therefore was not allowed to have them again. I have a good life, I’m very grateful for what I have even though I dont come from much and didn’t have the best experiences growing up. Life just feels so heavy sometimes and I have no idea what to do with this or where to put it. I want to be better but it feels so hard to start. All the advice about waking up early and working out I’ve tried and it feels like its not working. Has anyone felt this way before and how did you get through it?