Sometimes it changes. For example, Covid in French, everyone was using “le covid” (i guess cos it’s a virus, and virus is a masculin word), but then I believe the French academy weighed in that it should be “la covid” because it’s not the virus but the disease (la maladie) we’re talking about. Anyway. Yeah other than the official sources, many of us peasants all still say Le covid because by the time they weighed in we were all saying Le and so now saying La sounds weird.