Can I get SketchUp 2021 still?

I can’t get 3D Connexion “Space Explorer” to work with SketchUp 2022. Is it possible for me to still get the 2021 version of SketchUp downloaded? Or a new driver for the Space Explorer?

You can download SketchUp 2021 from Download All | SketchUp but it would make more sense to get the latest drivers from 3D Connexion and install them.

Your profile says you are using SketchUp Free (web). SketchUp 2022 (and 2021) are desktop client versions. Which version are you actually using?

I have downloaded the free desktop version. I’ve downloaded the latest drivers, and contacted their tech support… no luck.

What free desktop version?

That would possibly mean version 2017 Make. There is no free 2021 or 2022 version.
Probably the 3D Connexion devices don’t work with the Web-based versions, at least not as expected. My Space navigator scrolls Web pages OK.