IIN to be 28 and not have this

Yeah that's pretty normal and it's easy fixable too.
First apply for jobs, take what you can get and get an education if you want something that requires that, look for apartments or houses. A lot of people don't have social lives actually for different reasons but that doesn't mean you have to live at home without a job plus a job can get you a social life or else find a hobby and connect with people who share that hobby.
Why didn't you get a job while living with your bf? You just leeched off of him? Stop depending on others and get your shit together. Sit down and make a plan, get some therapy if you need that and really think about what you want out of life and then start working towards achieveing that.