I'm almost giving up to have relationship

I feel like I'm not capable of relationship. It's been a year since I became independent and I feel like I will not entertain anyone. There are few guys who tries to get to know me, but I always end up making friends with them. I'm extremely jealous of happy couple, but I don't want to have a partner at the same time. My sister told me that my ex posts photos of us, and I don't even want to see them.

Am I happy? A bit. Am I sad? A lot. Being broke is a different type of sadness. Will anything good will happen to me before 2024?

Update base on my sister: my ex deleted my photos and replaced with his new gf.