I’ve found alternatives to almost all proprietary software; all that remains is to replace the networks themselves, which are controlled by corporations and governments.
That will be a bit more difficult.

You can always use a nearby open wifi with a good antenna!

Part of me has been wondering if there's a way to set up a BBS on meshtastic.

What Alternative do You habe for Google Maps?
I know there are other options for navigation, but how do you replace the catalog of info that only exists on there. Opening times, the locations of small businesses that don't have a website and such?

OpenStreetMap (Osmand for android). But local info I can find in 2GIS (russian map service, because i'm in russia now)

my condolences

on phone i use both CoMaps or Organic Maps depending what i need. When wanting info about restaurants or something i go to the browser with open street maps

Because CoMaps/OrganicMaps does not use that info although OSM provides it?

yes. I guess they just dont save it because they are both for offline use

Hmm, for me thats probably the thing that makes Google Maps so useful, even more so than the navigation itself.

the networks themselves

What do you mean exactly? The Internet (governed mostly by US "non-profits" that are happy to eat MAGA balls)? Its physical infrastructure?

Hey if you bump into Putin, feel free to show him a window, yeah?

Look up Reticulum

What?

rare chance

It does for me, I assume they mean reviews and stuff. Google maps is just the best source for those.