Upon launch, I get a graphical glitch and no menu

Solution 1:

Taken from link below, this worked for me:

"FumalliLuigi added a comment - 39 minutes ago Here is a solution that I found that worked for me:

• Open AMD radeon settings
• Go to Gaming tab and press Games icon; you will see Minecraft under your games
• Press on Minecraft
• Go to Graphics: Change profile to Standard
• Enable: Radeon Anti Lag and dont change anything else
• Launch game from there

" - Bug Tracker

Solution 2:

1.16.200 has been giving me graphical bugs recently (although mine are not nearly as obstructive as this), so I’m guessing soon a 1.16.201 will roll out fixing it.

If you choose to uninstall the game, make a copy of your com.mojang folder in the game folders and then uninstall the game, reinstall it, and put the folder you copied back into the game. That should save all your worlds, addons, etc.