I didn’t brush my teeth as a child and teen because I had energy issues and I struggled to actually do them; I still struggle to do it today.
I rarely floss because it seems like a lot of work for seemingly little gains.
I got plaque again after getting teeth cleaned some weeks ago. I guess my teeth is screwed…
maybe neutralize the acidity frequently by swishing baking soda.
hydrogen peroxide is another good mouthwash.
edit: do not brush directly after eating acidic food.