for those who have the 11t pro, do this tutorial first
+https://xiaomi.eu/community/threads/twrp-for-vili-mi-11t-pro-a12-v3-9_a12-vili-skkk-updated-2022-07-26.66390/
then boot into twrp, if it doesn't decrypt you, change from pin to pattern or vice versa, then boot into twrp and install the...