/e/os is LineageOS + microG with an easy installer available or pre-installed purchase. The interface design is based on how iOS works, for example to move an icon on your phone long press one of the icons and wait till they all go wiggling and then drag the icon to where you want to have it.

I think /e/os is okay for folks who want a deGoogled phone that comes pre-installed.

In case anyone wants to try the /e/os easy installer on an old and supported phone, the /e/os easy install is really much more easy compared to plain LineageOS install.

Did you choose Allow OEM Unlocking in the phone settings ? The comments in that article show more users with problems. With some phones (Motorola ?) you need to request a code from the phone company before being able to unlock.

Disclaimer : I searched for more information, and having used custom roms on phones before. I do not know anything about this phone brand.