Help

Apologies if this is not the appropriate place for this...
I have downloaded the CB2022 and trying to install it. I am being told that I need to install a .NET Framework 4.8 which apparently is not compatible with my computer. I believe that I am using Windows 8.
I am not the most computer literate person, so any help in simple language would be much appreciated. I am guessing that I am out of luck unless I upgrade my Windows (which, I assume, will cause me to lose stuff on my computer, yes?)
I have downloaded the CB2022 and trying to install it. I am being told that I need to install a .NET Framework 4.8 which apparently is not compatible with my computer. I believe that I am using Windows 8.
I am not the most computer literate person, so any help in simple language would be much appreciated. I am guessing that I am out of luck unless I upgrade my Windows (which, I assume, will cause me to lose stuff on my computer, yes?)