Take a look at your eating patterns. Do you bring junk food into the house and then snack on it? Do you eat at night while watching tv? Do you snack frequently? Do you go out to eat often? Do you drink your calories?
It would be easier for me to give you tips if I knew what your weak areas are. That said:
Don't bring junk food into the house. If you have it - make it a chore to get it and get a limited portion.
Don't eat between meals.
Don't drink your calories.
Read labels - avoid / restrict processed food.
Sneak in a little time restricted eating, i.e. stop eating at 6:00 p.m. maybe wait an hour after waking up before having your first meal.
Embrace the boring and the repetition. If you have two or three healthy breakfasts that you like and that work for weight control, it's ok to repeat.
Prioritize protein, moderate amounts of "good" fats (a long discussion), and limit carb focusing on low carb vegetables. (I don't believe that many of us developed weight problems due to romaine lettuce or steamed broccoli.)
Make a list before you shop.
Make good habits.
Plan your meals the day before - when you are not hungry.
As far as exercise, exercise is wonderful, but it is not a replacement for proper eating. That said, think about your exercise routine and see if you can "upgrade" i.e. add some resistance exercise/ weight lifting, steps, "exercise snacking," etc.
Personally, I found keto to be helpful, with a concentration on fish, eggs, grass fed beef, limited pork, low carb salad, leafy green, and cruciferous vegetables. I don't eat seed oils and I measure out my olive oil when I make a salad dressing. I have taught myself to enjoy "healthy" foods. I do need to limit dairy and nuts so that may be a Sunday treat. My exercise includes walking (inside when the weather is cold or raining), the stationary bike, resistant exercises, pilates, and exercises given to me by my physical therapist and chiropractor. My "exercise snacking" includes air squats though out the day, and I do try to get up and move.
Now - I did some cleaning this morning, am sipping some black coffee, and will be heading off to ride my stationary bike.