Welcome! I did almost the same thing two years ago. Started, stopped, and went right back because it was obvious at that point that I had to. Was stuck at 190 (from 215, just cutting soda and candy, still living on spaghetti)) and flabby, now I'm in the 170-175 range and adding muscle all the time! Give it time, too. 21 days might be a great start, but some people gain health more slowly than others.
Don't fear the bacon!
Steak, eggs, potatoes - fruits, nuts, berries and forage. Coconut milk and potent herbs and spices. Tea instead of coffee now and teeny amounts of kelp daily. Let's see how this does! Not really had dairy much, and gut seems better for it.