I highly recommend Whole30. It’s not really a “diet,” it’s a way of reframing your relationship with food, getting you into the habit of looking at labels, and developing a comfort with daily cooking. It will also ween you off simple sugars.
I still love cookies and pies, but I enjoy them now in moderation as part of a Mediterranean diet of mostly fish/rice/nuts/berries and stir fry veggies. It’s not an obsessive diet with a lot of rules (unless I’m in a crohns flare, that’s another story).
Getting control over what I was consuming and taking care of myself was a big part of long-term recovery. Try Whole30! It’s actually really fun