Thanks for the reply !
I ended up staying up the entire night and reading everything I could find
Turns out in twrp I didn't mount the proper partitions I needed before restoring my backup ? and that why my backups wouldn't work
I've now been trying now to figure out how to get a newer version of Android on the blackshark since Xiaomi have basically abandoned us , I've tried to install a joyui 11 GSI unfound floating around , to no luck, to flash a GSI image to my device with twrp does my previous Android install have to be on the same Android version as the GSI I want to install ? My phone is backup and running now it's back on Android P if I want to flash an Android Q GSI. Do I have to update to an Android Q rom first ?
Do I install the GSI to my active Slot or the other remaining slot ??