Seeing a bunch of agencies commenting, It's not that hard to run this stuff on Facebook but as mentioned above you need a "strong" account which means that your account is trusted enough it will not go into manual review, but you will want to avoid triggering their system as well.
Use this exact link
Code:
https://www.facebook.com/ads/library/?active_status=all&ad_type=all&country=US&q=shark%20tank&sort_data[direction]=desc&sort_data[mode]=relevancy_monthly_grouped&search_type=keyword_unordered&media_type=all
It just searches for "shark tank" in the ad library of Facebook lol but that's one of the biggest angles being used.
You can also do searches for "kelly clarkson" as she is going pretty viral too and of course other celebs often you can just find out which celeb went from a fat ass to a nice body again on some drama gossip websites.
Selena Gomez is another example.
Again 100% you are going to get banned but the trick is going to be, 1 how fast can you scale, 2 how long can you run but besides these factors, you will have to keep in mind that there will be a lot of hate comments but you can avoid those using block words or tools such as commentguard.
Another thing to keep in mind, most of these Nutra offers are SS (Straight Sales) now so you going to need a good budget to get that pixel to warm up and find the real dummies in the audience. If you are just starting out it's much easier to run lower-paid offers that can convert just the same but you get a lot more data and testing for your budget.
Those deepfakes videos you see will run on very solid ad accounts as that's pretty much an instant ban if we come and human check.
Nonetheless, weight loss on Facebook is a goldmine so if you have the patience and budget for it, you will also get the rewards but don't go in if you are unsure about it as that will just take you on a path of lost time and money loss.
People also often use tools to write texts such as these lol ᶜᵉˡᵉᵇ.
Best of luck buddy! Remember that everything is possible you just got to go hard on the paint.