Has anyone seen the effects of diet supplements?

Hello, I've been really worried lately because I can't seem to lose weight. I feel like I can't do it on my own, so I've been looking into diet supplements.

I see people around me using it, so I'm thinking about buying one myself... Do you take any specific diet supplements? I'd love to hear some real-life reviews from people who've seen the benefits!

​It's actually surprising that you can lose weight just by eating, but at the same time, it's also a bit questionable. I'd also like to know exactly how body fat is reduced...

I've never seen any results from diet supplements, so I have a lot of questions. If there are any experienced experts out there, I'd appreciate some advice, even if it's just a little!