Ignore the stuff online, it’s scams.
However. I used to have a proportionally bigger stomach and a swollen face for some years. I was just stressed, miserable, eating badly.
Believe it or not I have a flat stomach now, skin I get compliments on and feel amazing most days.
2 things made a huge difference - embracing a low stress lifestyle, ie slow mornings, not one chore chasing another, taking time to do mindful things for my body, being in fresh air, spa days… Better sleep!
But most of all, not eating UPFs anymore. The moment I removed UPFs from my menu, my body let go of half a stone almost instantly. It wasn’t ‘weight’ as such, probably just water weight my body was holding onto with help from all the excess salt and sugar. Since then, bloating hasn’t been a thing, unless I occasionally lapse and eat pub grub or similar. Oh and no alcohol…
Certain meds or supplements may be available to help you as well but please speak to a professional. There are cortisol suppressants, but why not get tested first? Full bloods etc