My teeth are in good health and I take good care of them, yet I always get this plaque buildup no matter what I try.
I’ve tried different brushes, toothpastes, and flossing methods to no avail. Mouthwash is too harsh on my mouth and peels my skin off so I avoid that.
I haven’t tried waterpicks or electric brushes yet. Did you? Did they work for you? Have you succeeded in preventing plaque and if so, how???
As others have somewhat suggested maybe try some diet modifications. I also recommend going to the dentist and seeing what they have to say, everyone has different things impacting mouth health and a dentist will know how to help you the most.