You just mentioned 2 different Google accounts: if your devices are connected to Google accounts they are already getting a lot of information from you that way, and Google knows that those 2 accounts are related.

Librewolf + uBlock Origin on desktop. Mull + uBlock Origin on mobile.

I’m going to paste here the comment I wrote on another post about this same issue:

Organic Maps and OsmAnd are not adding ads during navigation. Nor “promoted pins”. Nor ads when browsing the map. Nor tracking your every move.

Seriously, give them a try. And remember that, if the maps are lacking information, you are free (and encouraged) to improve them on OpenStreetMap.

Open Tracks allows exporting in either KMZ (default), KML or GPX format. Go to Settings, tap on “Import and Export” and there look, towards the end, for the entry “Export/sharing file format”.