Find things you enjoy doing to avoid that sense of loser-dom. Seek a balance between things you can do on your own that make you feel better about yourself and communal-type activities like @BodyBySisyphus@hexbear.net mentioned.

Solitary hobbies could be getting into reading, crafts, cooking, gardening, the gym etc. There are even hexbear comms for these! and then integrating that interest into some IRL group activity. I’m not going to guarantee you’ll find a girlfriend, but at least you’ll have some interests you can talk about when you meet someone.

I haven’t been on “the apps” in many years, but I’ve heard they’ve gotten worse for everyone involved. So, proceed with caution.