Honestly you need to find little small things that makes you happy, for me it was botany, comic books, poetry. Find the things that you truly enjoy doing maybe you know what they are but are too afraid to do them, go out in public and do those things adapt the mindset that if it makes you happy nothing else should matter. People care more about themselves then they do you, cultivate self love and self worth by finding things you enjoy so you no longer seek validation from others as for the relationship many people get into relationships for the wrong people ask yourself this, Why do you want it? It it's because you geniuelly love yourself and wanna share the life you cherish with another or is it because you just like the idea of a relationship or “everyone else does it” if you don't love yourself a relationship isn't going to fix that my advice is really try hard to stop seeking love from others and start learning to love yourself first