Just a log of “my transition” and what have works well.
I used Google Maps a lot. I have moved to https://mapy.com/ works surprisingly well for navigation and regular map need, not very strong in POI, but that was expected.
Google Analytics swapped for https://dashboard.simpleanalytics.com/ - should have done this way earlier, just an overall better product for my needs.
Exited Goodreads for https://app.thestorygraph.com/ - zero problems
ChatGPT/Gemini moved to https://chat.mistral.ai/ - this one is a slight downgrade on both functionality and results. (so I am still cheating a bit on this one)
Moved to here, PieFed from Reddit - not regrets.
I was using Brave and Duckduckgo/EcoSia from before. I would consider moving away from Brave for a similar private but European browser.
Japan works fine in Mapy and, regarding your other comment below, it does show English labels when they’re in the OSM data.
You should investigate why it doesn’t load for you (network issues, firewall, adblock, DNS/VPN etc), cause it seems to be what you’re looking for, although I can’t estimate how well public transit is implemented for JP.