Limit your consumption of processed carbs. No bread, pasta, pizza, biscuits, cakes breakfast cereals etc. If its grain based don’t have it. Eat foods with a lot of fibre. Eat lots of non starchy veggies. Some fruit, beans, legumes. Some meat. Eat nuts and seeds to get your fats and protein. Avoid sugar at all cost. Avoid fruit juice! Limit alcohol consumption. Go to the maintenance section of this forum and ask people there how they achieved their weight loss. You’ll be surprised at the common theme that emerges. Good luck.