Load Error Code 800/801

Hi Crinrict, first of all thank you so much for all your hard work in troubleshooting and spreading awareness about these issues.

I have a question relating to this bug, and I think you are the right person to ask to. You see, I am confused about how to handle the 2 major bugs in the game right now: the error 800 and the cluttering/littering issue. I just started a new save, I don't have other residential rental lots other than the ones that come with the Tomarang world.  I want to get rid of those residential rentals to prevent the error 800 bug. But in order to bulldoze the lot, you need to load the lot first. And loading the lot, will trigger the cluttering/littering bug!....oh my God...I don't really know how to handle these...so do you think the best solution right now would be to just completely leave the residential rental lots in Tomarang alone? In the hopes that having as fewer residential rentals as possible in your entire save file would be enough to prevent the error 800 from happening AND prevent the cluttering/littering issue to happen too? 

Also, you mentioned about manually deleting unplayed homeless sims from our game regularly. Say if my game designate a certain NPC as a delivery person, should I NOT delete this NPC sim? And if my played sim has a friend relationship with an NPC sim, should I also NOT delete this sim? Sorry I am fairly new to the Sims 4.

I have been having ongoing issues for the past year. I often get lot errors 800 and 801 when trying to load them. I also will have lots that take a long period to load and end up crashing.  Now, my entire map of Willow Creek is unplayable. The house value have also dropped significantly.

I read it can be due to residential rentals, but I had this issue before. Willow Creek became corrupt after I added residential rentals. I try to remove them, but certain ones have an error and I cannot get past.

How can I fix my save? It is not possible to load a back up. Any advice will help EA Support did not have a solution or even a reason why this would happen.

When I try to load into Oakenstead lot it never load in and gives me error 800. I do not have a previous save where this would not happen.

I have tried:

Removing all mods

Restarting computer

Updating all drives (on both Nvidia and Intel) and all other windows updates.

Repairing game

Deleting local thumbcache

Removing Sims 4 folder from documents, starting game, inserting only the one save and nothing else.

Nothing works. This error is also accompanied by being unable to load or exit numerous random other lots or households. When I try to enter a household or build buy lot it will go into a loading screen that does not end forcing me to manually shut off game through task manager. This causes me to save all data if I had managed to play a bit and renders the game unplayable. The game was fine before the Lovestruck update. 

I tried all the steps mentioned in the error 800 along with trying to create a new save and the error persists in the new blank saves too.

I have scoured the internet and forums for solutions and spent hours trying to fix it this week but nothing works and I am beyond fuming.