NVIDIA definitely has stability issues, newest drivers still kernel panic on resume from suspend. Only thing more you can do is try to capture debug logs with nvidia-bug-report.sh (I go in during a crash via SSH, usually the system is still responsive for a little while after), and post it to the NVIDIA Linux forums. They do actually seem to use the feedback there, NVIDIA reps respond from time to time and say they’ve submitted bug reports from the feedback. Otherwise, after that yeah you just do what you have to do for a usable system and wait…
Nope, pretty normal. You’ll find that you’ll need frontends and proxies for tons of things. For example Instagram hasn’t ever worked for me with a VPN. I no longer have an account anyway, but for the times someone sends me a link I’ve had to find sites that let you view the content without actually visiting Instagram. Same with reddit, reddit frontends are very good these days (I’d recommend any Redlib instance). Also, sometimes a specific VPN server is IP blocked and you can just connect to a different server to view a web site that blocked you initially. It is a fair amount of work, but honestly its helped me slow down my consumption of random bullshit anyway haha. I use ProtonVPN and pay for premium.