my sims game keeps changing my sims name to my other sims

@FnafGeek101 No UI mod should be able to change Sims names. What's currently doing it (after Patch 1.108) is, oddly enough, almost certainly broken custom preference category mods (and larger mods that include custom preference categories).

Here's the thread about the name changing for people able to find a way into CAS that the broken mods otherwise block:

Solved: [MOD RELATED] Sims all get same name in CAS - Answer HQ

Here's another thread about the mods that I believe are causing this:
Solved: CAS infinite loading screen after 23. 07. update - Answer HQ

You'll also want the 1.108 Broken/Updated Mods & CC lists