I get cavities even though i do everything right. why is this happening?

Better home care: You might think you are brushing, flossing, etc, correctly, but might be really doing it that way. You might also be more prone to getting cavities, but with proper home care, the incidence of cavities will be decreased.

Better home care: Proper brushing is difficult and requires diligence. Brush all surfaces and gums, floss between all of your teeth, rinse with Fluoride every night. A combination of these three will reduce your caries exposure. Drinking carbonated, sugared drinks is very tough on teeth. They are bathed in sugar, your mouth's bacteria transform the sugar to acid which eats away at your teeth causing cavities.