On Xbox One S, so no mods or CC, have all dlc up to date right now, anyway, I take good care of my residential rentals that I made specifically for my Sim self's young adult sons & daughters with the...
Ideas
I'm not entirely sure I understand your issue properly.
There's this known issue: [FR] Every tenant event successfully resolved is instead treated as a failure | EA Forums - 4995435
Is this what you are seeing or just the tenants moving out ?
I'm not sure how much more clearer I can be honestly, since this game is obsessed with everything being randomized it's a random chance that they move out autonomously despite my five star ratings of each unit which I do everything I can to maintain, and more often than not do in fact.