mobile

So i recently rooted my device and installed TWRP to flash some files, but today i went to take the OTA (big mistake, i know) and i just get in a TWRP loop, i go to reboot the system and it brings me right back to TWRP. I tried to nandroid restore but apparently my backup was interrupted or something because i get the same thing after trying to restore. At the moment i am trying to install a custom rom and see if i can get my stock recovery back, any suggestions on how to do so once the rom is finished installing? I tried to use lg flash tool earlier to re-downgrade, but it wont pick it up in TWRP, and thats what it brings me to when i do the button combo with the usb cable thing.
HELP me lol