If I go to the gym, I think running and pedaling are the most useful. If you feel tired after running, you can walk quickly on the treadmill. Other equipment is also possible, but it is best to have a coach. Sit-ups are very effective for reducing waist fat, and also beneficial for waist exercise (I personally think it is useful). If you insist on doing these things every day, it should have a good effect. Pay attention to sweating heavily after exercise, and drink slowly when drinking water.
I wish you success in losing weight ~~O(∩_∩)O~