This datapack allows you to disable the end dimension by preventing you from placing endereyes in the portal. Furthermore, if you still manage to go to the end the datapack will place you back at your spawnpiont.

Works from 1.19.4 to 1.20+
Run /function disable_end:_disable_end and /function disable_end:_enable_end to toggle the datapack; Disabled is the default.
If you never killed the dragon before but still manage to go to the end, despite the datapack, you will unfortunatly see the credits, but this is still better than the alternative of increasing the deathcount.