Rose vinegar and all kinds of fruit vinegar on the market also contain sugar, but I think drinking it will cause psychological comfort, and I also consume extra sugar when I exercise less, so I may be fatter than not drinking it.

Just like some people get fat when they are vegetarian, it is because they eat too much or exercise less. In theory, as long as the output is greater than the intake, it will not be fat, and it will be fat if you don't exercise, unless the calories you eat are far lower than the calories you consume.