Since last monthly event, I will be destroying a resource or unit base and suddenly my screen goes black and then comes back but buttons are blank and the world map is very dark, new comp with plenty of memory (16Gb)and a solid gpu (RX 6600 XT) and cpu (Ryzen 5 5600G), everything is up to date, why is this an issue?

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Outside US ?
There have been some internet issues with some ISPs lately
kind of issue is usually associated with a comp getting overloaded, overheated or incomplete loading
you mention decent specs on your system ...... which gpu are you using? the onboard 5600G or the rx6600 ?
make sure your fans are properly working to avoid overheating