Also, backup the installed game (there is an option for that in the Steam game menu), make a hardcopy of the compressed file that is to be found in Steam/Backups. You can then install froim that file instread of needing to download it. Just saving the folder of the installed game will NOT allow you to reinstall from that. You need to use the backup option by Steam.
The data Steam collects, is limited, as far as I know,m and related to the games of steam indeed. That they know my playing hours, is not so much my concern. I mean the ammount of data Windows 10 phones home even if you have all mrelated options switched off, is a quite beigger worry. Almost 2000 data variabkles get frequently collected by Windows even if you shut all telemetry down as far as that can be done by the normal user. And these collect far more than just usage times, but allow to profile and identify people and connect this data to gained data form other sources. Sensitive, potentially abusable data.
If you are sensible about Steam, you should not use Windows at all, Steve. The whole bullcrap of Windows 10 has been reverse-engineered into Windows7 as well already long time ago. Go Linux. Chrome is safer than Windows, but knows no privacy. Apple is like Windows, just more locked in its own universe. For a weekly overview of the latest Windows patch mess, visit this siter occasionally:
https://www.askwoody.com/ Busines sslowly realises that Windows costs them money: in license fees, and in workaround, repair and overtime working hours by their IT staff.
Steam has started already years ago to slowly start migrating away from Windows, and offering more and more games for Steam OS which in principle is Linux, as far as I understand. Of course that is also announcing their desire to have people buying their own Steam hardware.
When Windows is gone one day, consoles indeed may be what ius left for me to play on. At least a few good racing games are available for them - Assetto Corsa as an example. Niche products however from the cosim branch and others, may find it hard to surive then, but since they usually do not need additonal controller hardware that Linux finds hard to offer drivers for, authors maybe finally will see a greater motivation to start developing such things for Linux.