@Mick282 oh wow, that's the first time I heard of the fact that firefox had windows Single sign on.
That indeed seems to have solved the issue, although it feels counterintuitive since well if you have to switch accounts you are obligated to add it as a windows account just to use it in the browser.
I don't think that this should have been a thing a browser should be standalone and not intertwined with a device account. I mean if you gonna use firefox on mac or linux and use powerapps its probably still going to fail then.
Unless they intend for it to work like apple you want to something from apple use apple, you want to use something from Microsoft use Windows otherwise you're screwed or that's how it feels (and I don't like that feeling).
Nonetheless issue solved Thx man!