Here’s a thought.
1. Eat less calories. Especially but not exclusively carbohydrates such as breads and pasta, alcohol, soda. Eat smaller portions. Stop eating at fast food places.
2. Burn more calories. Get exercise. Don’t drive so much.
It’s that simple.
If I cut the carbs and switch to fats I can eat until I feel sick at meals and lose weight.
Keeping to a reasonably low carb diet lets me maintain a good weight.