Should I stop caring about my friend of many years?

I have this friends who I've been close with for many years. We talked everyday, hung out, have similar interests, but it feel different now. She moved schools a while ago which meant we didn't see each other as often, but we still texted very frequently and called sometimes. More recently, she moved to another city and now we communicate much less frequently. When we do, it's basically just her sending me tiktoks and very rarely does she actually say something. I try to make conversation but it is very short lived with a minimal response. Though it seems like this only while texting. When we called a few months ago we talked as normal, but these days I honestly don't feel like calling her...

Also, we had another friend when we all went to the same school, but we all live in different cities now. I realized that those two have hung out multiple times, and never even mention it to me. I found out through their snapchat and story. They seem to still be quite close friends, but not with me. Another thing, I've known her for so long and even though I send her happy birthday, she doesn't remember mine. She's made jokes before like, "we've been friends for so long but... when's your birthday?" and still somehow forgets but posts stories about her new friends' birthdays.

I just feel like I've always been like 'the extra friend' or someone forgettable, even though I care so much about those around me. Now that my close friends are gone, I don't really have anyone else. I know they've already moved on and found new people, but I feel like I can't move on until I have more friends. Then I'll be able to forget the past and move on, live happily like all of them.

So, should I just stop caring now? Stop texting, stop calling, and just focus on myself until I find better friends? Or should I keep communication with her while working on my life too?

Should I stop caring about my friend of many years?
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