LineageOS for microg: degoogled android. DuckDuckGo: search. Firefox: web browser. Ublock origin: ad blocker. Proton: email. OsmAnd+: maps.
Only google product I still use is youtube, but I have made some efforts here:
On desktop pc I use firefox with sponserblock and ublock origin to hide ads and automatically skip sponsered content. I also have an addon called unhook, which hides recommendations, ‘people also watched’ etc.
I also use and recommend Odysee as a youtube alternative.
On my TV I use SmartTubeNext, on my phone I use revanced.
I host my own music server with navidrome (and my own video media server with Jellyfin). But when I dont have access to that, I also use ViMusic as a youtube music replacement for (degoogled) android.
Can absolutely recommend any and all of the tools I listed.