Which issues do Firefox fail to solve?
The problem is that my bank's website was made by a bank, but as a Firefox user this impacts me in my daily life.
Edit: I see there is a LibreWolf and a LibreFox
it's not like they did this maliciously to worsen your experience as Firefox user?
Firefox is the most user-hostile free & open-source software that I know of, and more hostile than a lot of paid, proprietary software.