< Ask advices about smartphone changing when you try to remove Google of your life
In the same line as what tatterdemalion is saying, in case you go on the custom ROM route, be aware of the importance of Google Play. A lot of application will not work if Google play is not installed on your phone (Signal, among others). Been there, been beaten. Didn't know about GrapheneOS, though.
I didn't know Signal needed Google Play? I use Molly-FOSS so that it is 100% free and open source.
Yep, I know, I know. I don't know if I want to manage with custom ROM again and lost functionalities on my phone.
I will say that Signal works fine with microG.