Sims 4 game entirely broken. Not sure what to do.

I have compiled a list of issues, some preexisting. I have already tried repairing my game. I have no cc, no mods, am up to date on everything, and have repaired my game multiple times. The bugs remain. What should I do from here?

1. Sim won't cuddle, snuggle, makeout, or engage in any seated romantic interactions. Will wave at me condescendingly and imply that my request is not possible

1. My sim will randomly appear in her sister/fiancee's clothes.

1. Notifications repeatedly and incessantly appear for baby quirks of multiple sims in the household that are no longer babies, caused by aging them up from infanthood in CAS.

1. Followup to 3. , sims will then drop into seated baby pose and sneeze or fart accordingly with their quirk.

1. Sim's biological daughter is now labeled as her niece. The game refuses to allow any alterations to this title in CAS even while using cheats, or even the MCCC script mod. 

1. Sim's fiancee is now being called her sister, and romantic interactions bar is not available despite their sentiments and romance bar showing their ACTUAL relationship. No solution to the problem, same scenario as 5.

1. Sim's sister/fiancee is showing up as her sister in the genealogy chart, and says that her own mother is also her fiancee's mother.

1. Sim either waves and implies they can't perform a request when a request is made, or will sit periodically with the request in the request bar, stare into nothing, then cancel the request unprompted.

1. Sim will be invited on date or outing, and for approximately half of these scenarios, their accompanying sim will appear on the lot for a brief moment before fading from existence.

1. Game will experience random FPS lag due to opening outfit-changing pop-up, ordering food, or at any instance where the live mode is paused to do something on the phone, computer, or in Build Mode. 

1. When performing the 'brush' interaction on any animal, sim and animal will become stuck in loop brushing animation.

1. When performing the 'bathe' interaction on any toddler, sim and toddler will become stuck in loop bathing animation. 

1. Sim faces threat of loss of fame in the notifications bar despite being a 5 star celebrity.

1. Sim often refuses to keep an infant in the back-carrier and will repeatedly remove an infant from the back-carrier unprompted.