Team project repeatedly crashes and autosaves are full of "Missing Assets"

I've invited you to several versions of the project. The original one was from v23.4 but the cloud version does not contain at least of day of work where syncing did not work. The subsequent projects were my various attempts to use (local) auto saves in order to relaunch the project. At one point, I "upgraded" to v23.6 in the hope that might help (It did not). When I was able to create new projects from auto saves, quitting PP and re-opening the project resulted in entire scenes (nested sequences) showing up as single clips labelled as "Missings Assets". 

To be honest, I'm kind of over working in team projects at this point. It's simply not a stable, professional tool. Premiere may be a fine app for short form projects, but I am finally accepting that it is not built for feature length films. My initial inquiry to "tech support" was nearly 2 weeks ago and the level of "support" was an absolutely joke. Seriously, you'd be better off not offering any tech support at all rather than this fake notion that there is someone on the other end who has even the most basic knowledge of the software. I haven't used AVID in years, but I do recall that the app is super stable and they have actual, well-trained people you can call to help with technical issues. If I wasn't so far along with my project, I would make the leap right now.