Upgrade: IMac mid 2011 to Monterey

20GB of RAM and a 500GB SSD. I updated the system to Sonoma, but it didn’t work well, it caused the screen to freeze and the system to slow down even after patches. I switched back to Monterey, and it’s running well now, but I still have three problems: 1:the Maps app doesn’t work. 2. The Apple TV app has issues playing purchased movies or shows – they either show a black screen with only sound or they force close. When I reverted to High Sierra, the movies worked fine. But when I switched back to Monterey, the issue returned. 3. Airplay receiver is showing in options but it doesn’t work I am not able to share from other devices, the iMac is not showing up. Boot improved from 90 seconds to 28-30 seconds.