I believe LineageOS used to be called Cyanogenmod, and it's a fully free/open source implementation of Android. openGapps is Google Apps (like Maps) that you can install without having the Play Store.
Using LineageOS lets you do many more awesome things with your device, but financial apps (and even some apps like bus ticket apps) often don't work on this setup because it's viewed as insecure.
Comments
I don’t know what any of these words mean, and I’m relatively technical
The sign-in I use requires a password (something you know) and a OTP generated by an irretrievable key, eg, something I have.
I believe LineageOS used to be called Cyanogenmod, and it's a fully free/open source implementation of Android. openGapps is Google Apps (like Maps) that you can install without having the Play Store.
Using LineageOS lets you do many more awesome things with your device, but financial apps (and even some apps like bus ticket apps) often don't work on this setup because it's viewed as insecure.