Those EXT4-fs write access unavailable errors look spooky. Should probably do some standard Linux FS testing (fsck)
I’ve not had to recover anything from a raspberry pi SD card, but in the case you start from scratch - and considering it’s upset at write access - you may be able to plug it into another machine and at least salvage bits of its configuration that way.
It was kickstarted a decade ago with release dates which they’ve never kept thanks to a constant modification of what a release looks like - namely splitting the MMO-like Star Citizen out from the single-player blockbuster Squadron 42 - as well as scope bloat. A lot of people originally kickstarted the game (mostly for what we now call Squadron 42 + some multiplayer thing) but now a decade on, the MMO-like Star Citizen is seemingly the priority project and most of the people who are currently funding the game are primarily interested in that.
After hundreds of millions of dollars of funding, it seems clear that Squadron 42 in particular is in development hell as it still can’t seem to make it to market. Star Citizen, while playable, teeters back and forth from basically unplayable to playable and all “progress” is subject to wipes.