I haven't been able to get Optifine to work with 1.16.5 🙁 every time I try to log into the server it says that spigot is outdated and won't let me onto the server. So I've just been playing with a texture pack and nothing fancy. 😅

Thanks for heads up about losing your levels in the Nether. I haven't been in there yet but was planning on going in there today. 😬 Must enchant things first.