Hi, a lot of people have left their thoughts and advice but I’ll leave mine too, tehe. It’s understandable why you’d feel that way. A lot of us do, you’re not alone at all. You have every right to feel like that. However, it never usually means anything other than the friend is going through something, needs some space or is busy.
I tend to leave conversations and rejoin them a few days later when I feel mentally well to continue to speak to any of my friends, and it’s not something that they’ve done, it’s just me wanting to socially recharge again. And that’s probably the case with your friend as well.
It’s a hard time for everyone right now, with the virus and the lockdowns. I’m not sure what type of relationship you have with your friends in terms of closeness. Are you able to discuss openly how you feel? I’d highly suggest telling your friend how their disappearance is making you feel. Let them know that these are your worries. If you need any sort of help in how to start the conversation (I always tend to give examples, if anyone needs them) let me know.
Hopefully they respond nicely and will be aware of their actions and how they’re affecting you as their friend. That step forward to communication will really help the both of you.
If you need any help or anything like that, I’m always here and so many others 