Hello teeBee
Life is too short to be staying home alone while everyone your age is out socialising. It is hard at a young age but maybe join dancing classes where you can meet new people plus get fit at the same time; though it may not be a party, it is better than sitting alone. Zoomba Classes and Ballroom dancing, it msy surprise you to see just how many young people doing ballroom dancing, it is very social. But it may not be your thing, if you are a pub/club person there is always Darts and Lawn Bowls. Stay safe.
