What's the difference between "eu gosto de sábados" and "eu gosto dos sábados? When do you use them
It would mean something different in English, too. "I like Saturdays" is general; "I like the Saturdays..." requires more information about those specific Saturdays, as in "I like the Saturdays when we sleep until noon and have champagne for brunch!"
I would be very grateful if someone could explain why this is de sabados and not do sabados (to keep with the gender).
that's because it is in general sense. But, if you want to keep the gender, use "dos sábados" (to keep the number too)
Am I correct to think if I'm not sure about the gender I'll be right to always use " de " instead of " do / da dos / das"?