Minecraft Crashes on Loading Screen

So I've recently encountered a problem when I load into Minecraft 1.16.4. Whenever I enter the loading screen to get into Minecraft, It doesn't seem to load and it crashes. I've tried to load into Minecraft using 1.12.2 and that seems to work but I can't load into any worlds because the game would crash. This problem never happened to me before playing Minecraft. It doesn't allow me  to join any multiplayer servers as well