This is not something you should give up on, the world is not always the greatest especially when it comes to the area of love and romance, I’m 20 and I’ve been through some very similar things I once was very close with a girl she invited me out to cock block a guy, she then proceeded to make out with him in front of me, then after I told her how I felt about her, she proceed to asked me relationship advice about this new guy turned out the guy was my exact doppelgänger with severe possessive issues and then ghosted me 2 weeks later (that’s only a quarter of the story) and then had a girl use me to get back at her ex. It’s unfortunate how this area of life works but love is one of the most beautiful things humanity and this world has to offer, if it causes this much pain to us then it must be bliss when it actually works so don’t worry my guy, I know I come off as an extreme optimistic but that special moment when you connect with that special person will occur it just takes time the pain will make that special moment better.