On newer versions of android it can be hard to install a root cert and trust it; mitmproxy and httptoolkit both have some great guides though. On iOS its easier - but yeah unfortunately/fortunately certificate pinned applications wont work
Depending on how much time you are willing to put in you could create a list of apps that dont PIN and selectively MiTM apps that dont
Depending on how much time you are willing to put in you could create a list of apps that dont PIN and selectively MiTM apps that dont