Dieting is the most unhealthy way to lose weight. There will be hypoglycemia, malnutrition, endocrine disorders and so on. Most importantly, it is very easy to rebound, not worth the loss. Therefore, individuals still suggest adopting healthier ways to lose weight such as exercise.
As for probiotics, I once took quiet bacterial strength chewable tablets, which were also used to treat constipation. You can see the effect in 2 days, and it feels quite good.