I messed up android partition with TWRP first of all sorry if I make any mistake, I'm new here. 

Help. Today I decided to try to root my xiami mi a2 lite...
I accidentally flashed twrp-3.2.3-0-daisy.img on both a and b partitions.
Because of that, now I can only access the TWRP menu...

I think I should download the official rom and get its boot file, but im not sure and I dont want to mess it up more...
I've downloaded the rom and found this .img http://prntscr.com/lmegw9 . If that's it, is it enough to flash it? and in which partition? a or b?
Find a rom made specifically for your device here
https://forum.xda-developers.com/mi-a2-lite

Then use this to unlock your bootloader &amp; flash a new boot.img recovery &amp; rom  https://forum.xda-developers.com/mi-a2-lite/development/tool-tool-one-driversunlocktwrpfactory-t3866191

Warning unlocking bootloader will wipe all your files.
Also make sure to flash g-apps. You can search "opengapps" and your os to find the ones you need.