So lately, when I join servers, everything regarding me will load fine for others, but not for me. For example, when I send chat messages, others will be able to see them but from my perspective, mc will show that nothing has been send. I even have a video showing my problem: https://www.youtube.com/watch?v=OlJDJTsyl3o
This won't happen in every server and/or in every minigame, but it's happening in most of them.
Edit: it is now happening on realms too and it is very furstrating because I can't play in almost any server
This report is invalid as both your game and the server you're playing on are modified.
Please only report bugs that can be reproduced in a vanilla (unmodified) environment.
Issues caused by third-party modifications needs to be taken up by the appropriate team, not Mojang.
Many servers often run modified server software; you'll need to contact them if the issue occurs on one server and not the others.