Minecraft Java Multiplayer and Skins stuck as Zuri on MacBook on Latest Version [java]

Hi, I've been having this problem off and on for a couple months now, and I can't seem to find the solution. I'm not able to join multiplayer servers, and I'm unable to use any skins other than Zuri. Despite the Minecraft launcher and website confirming the skin change, I've seen a post similar to this one, but despite following the instructions to fix my problem, it still remains. I'm currently on version 26.2, ive also had this problem through earlier versions

I've already tried.

-Changing my DNS

-Tweaking with my firewall

-Uninstalling and reinstalling Minecraft

-Joining on a different device

-Clearing the cache data

If anyone has had a similar experience or knows how to fix it, that would be super appreciated