If the intensity of training is not very great, there is no need to bring an abdominal belt at all, because if you wear an abdominal belt for a long time, it will easily lead to the relaxation of abdominal muscles, which will not be of much help to training, and it will not be used if the weight is small. If I am in the gym, I often see people coming to the gym with an abdominal belt before they start training. Maybe they think it looks better, or it looks more professional. This is actually a kind of training.
So if I train with my friends, I will tie my abdominal belt until the load is too heavy, for fear of hurting my waist. Moreover, the abdominal belt is not used in all fitness movements. Generally, there are fewer places where abdominal straps are needed, such as hard pulling, squatting, backward pedaling, rowing in a sitting position and so on. And generally requires waist or waist-related actions. Other moves are what my wife needs.
Moreover, we should fix the abdominal belt, check before the action and try the posture. When you feel no problem, you can do action training, just in case. If the belt suddenly collapses during weight training, it is really dangerous. If you hurt your waist badly, you will probably be in a wheelchair!