Of course! I’e just shared my opinion on this, it’s not a guideline you have to follow :)

I tbh would say, just go with Kubuntu. You can always switch afterwards when you end up not liking it, especially the fact that family members use it can be helpful.

Backups, always do backups of your important stuff, this is not a thing exclusive to Linux, but something many people forget about.

You may find smth abt it within Google’s Support pages or their privacy policy