[2022] Just paid 60 bucks for the 1800 Complete Collection. Game doesn't even launch.

I've already wasted four hours trying to get this thing to run, but it simply won't launch.
When I try to start the game it shows the small window synching saves, achievements etc, then the window closes and simply nothing happens.
Reinstalled the game, reinstalled Ubisoft Connect, rebooted PC, checked game file, tried dozens of tips from forums. Nothing.

Somewhere it said that some RTX graphics card may have trouble running the game, but without any hints or tips how to make it run. Support Chat is of course also not available.
I've already wasted way too much of my precious time trying to fix this, now I either demand a working solution or a full refund, as it is not my fault that the game does not run.

System:
Windows 10
Ryzen 2700X
RTX 3060 Ti
16 GB RAM