I made a Nougat build for this device (flounder) and for the flounder_lte.
Why Nougat ? Because it’s officially supported by LineageOS, and not Oreo so at least there is one build for this device we are sure it works correctly. But try the Oreo build first.
e-0.9-n-20200703-UNOFFICIAL-flounder.zip
e-0.9-n-20200702-UNOFFICIAL-flounder_lte.zip
TWRP : https://dl.twrp.me/flounder/
Don’t forget to backup and share your experience, thanks 