It says that some packages could not be installed

This means that you have requested an impossible situation or if you are using the unstable distribution that some packages have not yet been created or been mived out of incoming.

The following packages have unmet dependencies

Python3-tornado : breaks : mitmproxy (<5.0~) but 4.0.4-6 is to be installed

E:error , pkgProblemResolver :: Resolve generated breaks, this may be caused by held pakages.

Please help soon idk why this is happening I gave everything that it was showing