You can go to Taobao to find a fitness chair with dumbbells and the like. I think it should be enough to practice at home with minority fitness equipment such as abdominal muscles.

Personally, I don't recommend going to the gym. After filling the money, you won't go again without perseverance. The cost performance is not high. It's more convenient to buy it at home than to go to the gym. Of course, it is understandable that you say that the gym has no atmosphere and integrity.