Default Couldn't Install Rom or Backup Lg lu6200, stuck on twrp recovery

I am a noob .
I was trying to install MUI rom and I didn't went right and now i am stuck on TWRP recovery with no rom. I got 3 roms in my SD card and a backup or previous rom but when i try to install any of these I get this message "Unable to find partition for path". Please tell me an easy way to recover my phone.