Also, use Windows 10 LTSC. You can download an eval copy from Microsoft and turn it into the full version by following the instructions here to change the installed SKUs: https://github.com/victorlish/Convert_to_Windows_10_LTSC. Then use the KMS scripts above to activate it.
Ignore the FUD about “LTSC is designed for specialty purpose machines like medical devices, retail kiosks, blah blah blah.” It is what Windows 10 should have been: no bloatware, no ads, no MS Store (you can add it back if you want). No forced upgrades. I’ve used it as my daily driver since Windows 7 went EOL, and I’ll never use a “normal” version of Windows again.
I have nearly 1500 hours played in Civ V. Never completed a single Civ VI game. Hoping they rediscover whatever it was that made 5 so great!