I'm having a similar problem. Optifine won't let me start the game and when i install Rubidium + Oculus, it tells me Flywheel requires Sodium 0.6.0. and that my current version of Sodium is 0.5.3 I don't have Flywheel or Sodium in my mods folder, I play on Forge and Sodium is for Fabric and Sodium 0.6.0 doesn't exist for Minecraft 1.20.1