The Xiaomi 12 may rely on the Sony IMX766 for the brunt of its camera chops, but it turns out that its telephoto and ultra-wide-angle sensors let the side down. Unable to compete with the Xiaomi 12 Pro, the Xiaomi 12 only musters slightly better camera performance than the iPhone 12, not the newer iPhone 13 or other flagships like the Pixel 6.
https://www.notebookcheck.net/Xiaomi-12-fails-to-impress-in-DxOMark-camera-tests-as-it-trades-blows-with-the-Apple-iPhone-12.612238.0.html
You cannot get good out of bad.
Xiaomi is, and will continue to be, forever, a generic brand product company that "wants to be" premium by mouth but never by integrity, performance, etc.