Some apps which come with default OS installation cannot be easily removed because they weren't designed this way and were supposed to work as a part of OS. They still can be uninstalled by 3rd party tools, but either not completely (some remnant files will exist) or it will result in non-working links in some parts of OS, mainly in Settings. For example, OneDrive was a part of Windows 8.1 and its uninstallation was not possible by design, Settings has the direct links to it. Contrary, in Windows 10 and 11 OneDrive can be uninstalled without any harm to OS. Camera app may be similarly incorporated in OS since Windows 8.1, and if you uninstall it, some individual or cumulative OS updates may fail as a result.
Anyway, I suggest to make a system backup before such uninstallations.