I’m trying to download app’s from the App Store but it keeps saying that my account has been disabled in the App Store

That usually means that there is an issue with a previous purchase. You need to speak to Apple directly.

Get Support -

https://getsupport.apple.com/

M1 Mac mini, macOS 11.5.1; Watch, series 5 GPS/cellular, watchOS 7.6.1; iPad Pro 2nd Gen, iPadOS 14.7.1; iPad Air 2, iPadOS 14.7.1; iPhone 12 Pro, iOS 14.7.1; TV 4th Gen, tvOS 14.7  HomePods, audioOS 14.7 and Airport Express w/ Airplay 2