

GrapheneOS is still moving ahead albeit slower, as you said. They are also working on a deal with a phone manufacturer to bring a more secure phone to market. I dunno whether it will just meet the same security levels of the Pixels and ship with stock Android, or if it will be a full GrapheneOS Phone. I’m hoping for the latter, but it will more likely be the former. Fingers crossed.
I try to use OsmAnd when I can. Its probably the best FOSS option. My Google alternative is Magic Earth, which is not FOSS, but is powered by OSM and more privacy friendly than Google.
I was happily impressed by how active the contributor community for OSM is. I got good feedback on my contributions. Its so satisfying to see the map improve based on your efforts.