Feeling Lonely

I tend to feel lonely and a bit sorry for myself when I am craving social connection that is not reciprocated, such as wanting to call or talk with someone face to face. This happens late at night for the most part, when I am feeling I’ve wasted my day or am just having a bad day mentally. Usually I obsessively check socials and then just sit with myself and my thoughts. I think it has something to do with an attachment issue. I am just wondering, what does everyone here do to cope with this feeling? How do you get out of it? I didn’t have stable friends or a real friend group growing up, and now that I have one, sometimes I find myself a little too “attached” to how other people are, rather than to my own circumstances.

I know this isn’t healthy, and I am asking for some truth, but also kind and helpful words of advice.