A lot of people feel hopeless at times in their lives.
But getting up and doing something is a distraction at least.
You say you live at home, so could you go through the motions and do something at home today.
Deep clean the kitchen with the radio on, clean the windows, vacuum the stairs.
Plan and cook a Sunday dinner for everyone.
Get a board game out.
Pick up a book you have been meaning to read.
Don't let ex boyfriend steal another day from you. He won't care if you are wallowing.
Does your mum, or dad, or both like a bit of pampering? Can you get a face mask? Foot bath? Watch a film together?
The things about your life which jump out, you have a family, home. These give you some breathing space. Can you talk to them? Your parent(s) have life experience can you ask their advice?
Shops, garden centres, restaurants, some will be looking for seasonal staff, could you do something temporarily whilst you look for other things?
Is there a local dog walker who might need additional help or cat sitters?
Have you put a post "looking for work" on a local Facebook site?
It will be ok OP. Everything passes, everything changes.