Fitbit Syncing without gps or internet connection. Or keeping data locally only.

I have a Fitbit Blaze which isn't like the newer smarter watches with the newer fitbit os. Does anyone know of a way to go about these things. I"m on Resurrection Remix 6.1 or Oreo 8.1.

I just a few months ago completely ditched google and their "free and cool" services and gapps, for microg and nextcloud. For privacy. I first owned a knock off of a 39 dollar xiaomi mi band 2, which didn't require either, Still I'm working retail for the time being, I found a deal on the aging blaze. Instead of 199, I got it for either 69 or 79. A pretty good deal on a watch that does everything I need it to do. Now fitbit has all kinds of data on me as well as google. Is there anyway around this? I could fake the gps data but don't want to deal with the headache of doing it every time I want to sync.

Does anyone know of a good way around all the fitbit crap? Thanks in advance for any ideas.