Pop!OS is a pretty stable distro, so there shouldn’t be any dependencies problem: you usually have that on arch or arch based distros, even if it’s quite rare. Have you ever uninstalled Firefox and reinstalled it but without some of its dependencies? Or ignored a package it asked you to install with it afterwards? If not, maybe it’s just an update that went wrong, like the PC shut down during an update or something. So update your system, uninstall firefox and reinstall. Your data stored in your home directory (in .mozilla, a hidden folder) like your history, extensions, opened tabs, should be conserved, even if you use apt purge.
There is no proof to be a bias against non-male in the programming world. As far as I know, any country regardless of their gender equality effort up to a certain point have basically the same women to men ratio, which means it isn’t the action of some oppression or shaming. Worse, countries that are less egalitarian are a more equal ratio of women and men, like India, as opposed to a lot of western countries. It’ll never change unless you manage to brainwash a good amount of women into thinking they like programming, despite them not liking it.