Device name：Redmi 13C/R 5G / POCO M6 5G

Codename：air

Bootloader：You need to unlock the bootloader if you want to flash a rom into your phone via fastboot method, and your data could be deleted as you choose, please make sure you have backed up your personal data. , Apply for Bootloader Unlock here.

MIUI Roms：Yes , go to the MIUI site: Redmi 13C/R 5G / POCO M6 5G(air) - MIUI Official ROMs