Should You Brush and/or Floss After Every Meal?

I’m not sure about this but I think dentists recommend that you should brush your teeth and floss after every meal. As a teenager, he told me that I should get braces but I didn’t. My dad really tried to convince me to do it but he didn’t force me to which I’m very grateful for. He told me that if he could go back he would’ve done it and he also told me that I would regret it. I would say now that I’m really not sure if I regret not getting braces or not. I vividly remember that I didn’t want to get braces because I was in high school and I didn’t want to feel “ugly”. Not that I felt that people with braces were uglier but I just felt self-conscious about it for myself. My top teeth were pretty straight, it was just my bottom teeth that were crowded and therefore crooked. Since my smile only showed my top teeth, I felt that it was not a big deal. Later I realized that as I or anyone speaks, their bottom teeth show and I didn’t want people to see that.