How to Install Custom ROM on Mi A2 or Any AB Slot Device

From what I read, I should first boot into TWRP then flash it, else I will break things, correct? If I manage to basically dual boot my

Boot TWRP in slot a; Install LineageOS , TWRP will install it to slot b! Flash to slot b

fax lottery fax How To Port TWRP To AB Partitioned Devices Running Android 10 And 11 (MediaTek

av 伊織 B partition system So for a while, it's How To Install TWRP Recovery On Any Android