You have made a positive start, that's great! I know someone said I was harsh with you but you are jren to make changes.
My suggestions would be:
How about making your own bread at weekends. There are really quick breads with minimal ingredients. You could do it as an activity with Dd.
As others have said, look at doing food shops for healthy options. It can take a while to get in to the swing of things but it will soon become a good habit.
Buy some nice cookbooks and choose some meals together. Admittedly I didn't have a great deal of success with this. My lads weren't interested! However it worked well for my friend.
When mine were little I never had snacks such as crisps, cereal, chocolate, ice cream, biscuits in the house. Of course we did have these things occasionally, they werent forbidden, but we had to make a conscious effort to get them. They were a treat rather than an everyday expectation. If we were at the beach or a country park, of course the kids could have an ice cream but there wasn't tubs in freezer.
Op you are starting at a different point than I did. That was my normal living before I had children. With you it's a case of making a fresh life style choice sticking with it until it becomes second nature. I swear it will happen if you are consistent.
Another thing is that we were ( still are) an active family. I know not everyone wants to get out every weekend but we thrived on it and spent time hiking and mountain biking in Scotland since the kids were about seven. Now they are older this early behaviour has stayed with them and they hang round with like minded friends. Make time to do fun active activities together.
I hope it goes well for you both!