Help with rooting my phone

[Ame76]

Hey everyone, I'm new here so i hope i haven't selected the wrong category. Anyways I'm trying to root my Xiaomi Mi a2 lite without twrp since, if i understand correctly, it needs the data partition to be formatted as it cant decrypt it, and I don't really need it anyway. I wanted to use Magisk manager to patch a boot image and flash it to get root, but the app explicitly asks for .img files. I've been looking everywhere and I can only find zip archives or .tgz files of my firmware. I'd appreciate any help, and btw my build number is 11.0.21.0

 

[SMcC2]

Hello and welcome to XDA!
You may get a better answer on one of these forums:
Xiaomi Mi A2 Lite Guides, News, & Discussion
Xiaomi Mi A2 Lite Questions & Answers

If you can get to fastboot
fastboot boot twrp.img
Will boot TWRP on your phone temporarily without overwriting your current recovery.

TWRP for Xiaomi Mi A2 Lite

Note: Xiaomi's implementation of the keymaster may prevent decrypt from working using the fastboot boot images. Decrypt should work after installing TWRP.