@savalizz: So far here is no special ROM for the Mi 9 Lite, unless the ROM for the Mi CC9 (pyxis) also fits the Mi 9 Lite. For the Redmi K20 and Mi 9T this is the case - one ROM for both units (davinci). Maybe one of the devs can confirm this?
Edit: Maybe you can try to find out the codename of your device with an app like Material Terminal, Android Terminal Emulator, AIDA 64 or Droid Info.
Fits? Come on now, the have the same codename. It's not rocket science.
It's not like the Android One devices which have to have different partitions and hence different codenames.
Even the ROM is named MI9LiteMICC9. Literally all you have to do is look and read.