Yes, sadly, there are alternatives for Linux, like EasyEffects, but not so complete.

You find life cams over the whole world, independent of dozends of dedicated life cam pages, even in YouTube, means that you maybe appears in YouTube without knowing it. Independent of cams used by police, smart glasses, shops, banks, etc.

earthcam.com/network/

https://www.skylinewebcams.com/en/webcam.html

https://worldcams.tv/list/

https://www.youtube.com/results?search_query=live+cams

etc.

If the company or school isn’t more privacy-conscious, it’s their problem, not the employee’s or student’s. Naturally if they don’t use these devices for private matters. You can only warn of these problems and how to alleviate or solve them, if they do not pay attention, you only have to shrug your shoulders.

Exodus is mandatory on Android or alternatively also the similar PrivacyScanner

Agree,also Fairphone is a very good solution. Maps have a lot of alternatve solutions, more now as Google discontinued it’s Streetview feature, the only thing not present in other maps. Most other Google services have also pretty good alternatives, also linkeable Android Smartwatches have it (e/OS is normally good compatible with Android aps, exept maybe limited with Google ones, due to the lack of corresponding APIs)

https://alternativeto.net/software/google-maps/?license=opensource&p=2&platform=android

https://github.com/yjeanrenaud/yj_nearbyglasses

Adding that the Apollo 11 soft isn’t much more complex as the one of an current pocket calculator, I doubt that it can even run DOOM. NASA anyway has a huge OpenSource catalogue, all their soft used is OpenSource, despite some with restricted licenses only for official uses. Same for other Space agencies, eg. from the ESA. Good sources for astronomic fans.