I think both method you use should be able to achieve what your current goal is aiming. The issue here might lies in

1. Time - How long you used to "determine" whether this method is not working or not.

2. Food - Since what u mentioned is not working, have you tried "calculating" your calories intake vs how much u burn a day?

3. How you define a lot?

Honestly, just based on what you write and how you try to ask the public. I could tell you arent even putting effort in this " cutting belly fat ", if you are it will says otherwise from your post and how you ask your questions.