I didn't cook much either when my boys were young, and when I did, they complained about it so much that I'd relent and buy fast food more often than not. It wasn't until they were adults and I got a job at a meal kit company, that I learned to cook better (we got to take home free kits). I didn't know that veggies roasted in the oven could taste so good! You've taken steps to making better food, and that's awesome :) You can't go back and change the past, and it's okay to feel bad, but then shake yourself off and stop letting the past infect your present :)