Belly fat has never been a big problem for me, I carry excess weight on my legs, butt and arms. This is probably a genetic thing, not something affected by my lifestyle choices but I can tell you what worked for me to lose the 30 pounds I accumulated throughout my forties and fifties.
Don't give up any foods you really enjoy but have them less frequently. Only eat the junk food you truly enjoy. Be very picky on this. Never eat it just to keep it from going to waste or because someone is insisting you have to have some.
Consider portion size. I bought smaller bowls for dessert and only use the big bowls for salad. I admit I sometimes refill that dessert bowl but I used to do that when I started with the bigger bowl.
Licquid calories are never as filling as something you have to chew. I don't keep soda in the house. If I really want one I walk 10 blocks to go get it.
When deciding what to eat prioritize minimally processed foods that came from plants. If you have to ad some butter, bacon or sugar that's ok.
Get up and move. Any kind of movement. Something you enjoy is good. Something that accomplishes something useful, like mowing the lawn , is also good.
Prioritize getting a good nights sleep. I can't eat within about 5 hours of bedtime without having to get up to use the bathroom during the night.