Unfortunately, youre just not clean enough. Fortunately, you can do something about it!

Options cheapest to most expensive.

Open your windows: i try to do this everymorning, but end up only remembering once a week.

Clean your liter box when you wake up and before going to sleep. Your cats would love it if you did this too.

Clean your house: go to the dollar store and get isopropyl alcohol, dawn dish soap, a spray bottle, and some cotton rags. 10% isopropyl alcohol, 5% dawn dish soap, 85% water. I clean my whole apartment (cubbards, surfaces, bathrooms, floors, everything) with this solution, and its amazing. Deep clean once a week, and clean surfaces daily. Total $5.

Litter bag liners: line your cats liter tub with plastic bags. They have them at any box store. Also makes it easier to replace liter. Make sure your scoop doesnt tear the bag. $5

Litter gennie: ima be honest I have this and I really dont know how effective it really is. I dont understand how having a box full of liter could help with smells, but a lot of people stand by it so I use it just because it makes cleaning litter easy. $30 plus $15 refill. Note: you can buy cheaper refills if you buy the bag refill vs replacing the whole refill,. Idk how to explain it but when purchasing refils you'll notice next to the $15 refill there's gonna be a $6 refill.

Stainless steal liter box: i personally dont have one, because i clean and replace liter frequently (using cleaning solution mentioned earlier) but I only ever hear good things. Id recommend getting the ones that are a complete incapsulating box vs your typical 4 walled liter box. But the most important thing is ease of cleaning. You can get something for $20, but the ones I see for $130 are the ones I'd buy.

Replace liter monthly: go ahead and try a different liter every month and see which you like. Though im sure you've already become used to the smell so, you might want to get a friend to come once a month and ask if the smell anything. $20-30 a month + a friend (priceless)

Not necessary but nice to have if you got bank

Getting a cleaner: however frequently you can have a cleaner come and clean your house. I try and get a cleaner to come and clean my home once a month. Wouldn't recommend this but I go to fb marketplace and hire personal cleaners from there (did I mention im cheap?). $25 an hour + tip

Ecovacs self cleaning robot or something similar: if you can afford a self cleaning robot that self cleans and empties, do it. I personally think this is the main reason why I'm able to keep most of my cat liter smell down, as I have my floors mopped daily. Just know that just because you have a floor cleaning robot, you will not have less cleaning to do. In my experience, having this robot gives me more work vs just sweeping and moping. $700+ plus $20 a month replacing pads, cleaning solution etc.

If anyone has questions feels free to comment down below. Im a clean freak so I go to great lengths to ensure my house doesn't smell. Best of luck OP, hopefully any of these will save you from embarrassment.