I know this isn't the first time you've heard this, but there's a reason it continues to get said over and over. While some people are genetically predisposed to have chiseled abs, most will have to cut out alcohol, sugars, and processed foods. If you make these dietary changes and are satisfied with your results there's no need to go any further.
Another option is to implement a calorie deficit and eat fewer calories than what you burn to begin to reduce the amount of fat you have on your body. Read here to find a formula to determine how many calories you should be eating daily to drop weight.