Андрей Мурадян

Don't be upset.be upset, the new versions will fix this

@Dhranios yes, I know but I'm used to writing like this

I checked everything in a single game on versions 1.16.5 and 1.17.1

of course, I don't really understand command blocks, but I know that it would be better to use "need a signal" (so you can check its performance)
and don't forget to put a slash at the beginning of the command
For example, write: /time set night
is mandatory during the day
If it works, then try to turn on "always active"

over time, the chunks will load

delete or reinstall your textures in minecraft