For A11 you need to use twrp for A11.
That its for A12/13
You can read from dev:
exemples:Versions of twrp 3.6.2_ 11 -x were developed and tested for MIUI on android 11.
For MIUI13 on Android 12 and custom firmware on Android 12-12.1, TWRP 3.6.2_ 12-0 was compiled on A12 sources with encryption support.
You do not need to install it on MIUI with Android 11 if you are not going to switch to Android 12, because. the permissions of some applications and not only get lost, which leads to a lot of errors and non-working phone functions, such as, for example, it is impossible to turn on Bluetooth...
twrp_3.7.0_12.1_Surya.img = A12
twrp_3.6.2.11-1-surya-27.08.img = A11
All version here: https://sourceforge.net/projects/surya-twrp/files/