Microsoft doesn't want you customizing the taskbar because they decide what
adds apps you have
if you want to muck around with 3rd party apps you need to understand that Microsoft will keep bring out 'updates' that kill the app you use
which exact copy of the app are you trying to run because there is about 4 so far... they add things like a 'start with Windows' box and the option to match system font... older copies without these will need to be turned on from the 'Device Manager' which is a shit to do each time
another work around some people like is to custom build the entire Windows 11 ui with software like
StartAllBack that basically blocks Microsoft turning your task bar off each update but you have to pay a licence to use it