i don't see anything in the wiki for add or remove a trinkets slot
there is no config file on my server
and i don't know how to code and i don't have a data file for trinket

pls i want help its just adding and removing slot from the mod that all i want and the wiki doesn't help because its not a datapack

Just read the wiki.

This can't be done with a config file, it's not how it works. You'll need to make a datapack or a mod.