Tips for terrible loneliness/depression

Without going into everything; I am having a tough time at the moment with depression - I haven't had it this bad in years. I wouldn't ever commit suicide because my love for my family trumps everything and I wouldn't hurt them, but life is incredibly pain-ridden and I feel no joy in anything.

I am desperately lonely and I feel used by friends as well as the opposite sex. I made out with two girls I met on tinder in the last 2 weekends but by the day after they end up flaking and don't return a simple text (the texts I send are fine/non-needy). I just don't understand the Rubix cube that is the dating scene. I am charismatic and have no problem pulling but keeping a girls interest feels incredibly complicated. Maybe I'm attracting the wrong ones; both self-proclaimed "bad girls".

Anyway I feel very very low. Has anyone got any tips on living day-to-day? Any good ways to cope - maybe particular activities or thought patterns? I'm trying to get back on Nofap as it has helped me in the past with depression - though I can't beat 14-21 days these days.

I am doing a lot of research but getting some insight from people who have been there would be helpful.