The main thing in sports is nutrition. If you decide to start losing weight, the first thing you should do is make a meal plan. Your diet should include proteins, fats, carbohydrates, and preferably avoid sugar. I know it's complicated, but there are many food additives that you can use as a dessert. I added bladderwrack to my diet, as I read many benefits of this dietary supplement on https://druggenius.com/nutrition/bladderwrack-uses-benefits-and-side-effects/. When you start losing weight thanks to the diet, only then can you start doing strength exercises.