@trodlermichal said:
...and SketchUp is important for my and my job daily.
Your profile says you are using SketchUp 2017 Make. You can count on that version not officially supporting newer Mac OS versions.
FWIW, since you are using SketchUp for your work you should not be using SketchUp Make, anyway. That's a violation of the EULA. You need to be using SketchUp Pro. As slbaumgartner wrote, many users have reported the current version of SketchUp Pro works. I would expect the next release will officially support Monterey.