My area didn't have a designated RSN, so I was able to watch the games on the regular ESPN app at no cost and without a subscription. I went to the ESPN app, selected the game, clicked on my provider from the menu, logged in, and watched the game. I followed the same procedure for games on ACC Network Xtra.
My area does have a CW channel and it is one of the local stations in my YouTube TV package, so I will be able to select those games to watch live or DVR.
It's one thing if there's a CW station in your area and they black out the game because the station isn't a part of your streaming package and it's quite another if there isn't a CW station and they try to keep you from using their app to watch the game. For most areas that have a CW outlet, it's usually the main part of a UHF station or a sub channel of a VHF station. Either one can be picked up over-the-air within 20-30 miles.