I flashed Pixel Experience 12 today on my Redmi Note 9s. And it feels like brand new phone! It's faster and it has better UI than MIUI. Also I got Magisk module
Xiaomi Redmi 10X Pro (Redmi Note 9S) 8GB+256GB
Pixel Experience – A Perfect Android 12 Experience | Redmi Note 9s/Pro/Pro Max/Poco M2 Pro - YouTube
Get Android 12 For Redmi Note 9S/9 Pro/9 Pro Max/Poco M2 Pro (Miatoll) | The Custom Rom
Pixel Experience With Android 13 For Redmi Note 8/8T (Ginkgo) | The Custom Rom