I have zero friends

I don't even know why I'm writing this . I guess to get it off my heart.

I'm married (6 years) and have a 4 yo and am pregnant with our 2nd. I feel like the biggest loser. All I do is work, go to school (for a master's degree) and stay with my son. Even My husband picks video games over me. I am so fucking lonely. I've tried mom groups and play groups but it never works out especially with my work and school. I feel like no one is interested in me as a person. I don't even have work friends. And I think I'm a nice person. I'd literally give the clothes off my back if someone needed (I've done that). I just can't seem to make and keep friends. IDK how people do it. IDK what is wrong with me