Earlier quoted context omitted.
You are in luck: LineageOS supports many Motorola devices, including the Edge 30.
In the past I often tend to replace stock Android with LineageOS but in today's world with so many attack vectors like for example malware in supply chains etc. I choose to stay with stock OS. I also have my bank apps and lot of my clients data/credentials stored on my accounts.
For a particularly sensitive context I'd want to build the ROM myself on an appropriately secured machine running one of the major distros.