i would first check what exactly is getting banned because ad rejection, disabled ad account, bm restriction, page restriction and payment hold are all different problems
check account quality and save the exact reason meta gives you, also make a simple sheet with the offer, geo, domain, page, creative, payment method and how long it worked before the ban, after some tests you may see the same reason repeating
otherwise you can burn 10 more accounts because of one landing page or claim and still think the accounts are bad, for nutra and peptides i would check the full landing page and checkout too, not only the ad creative, casino also depends a lot on the country and if you are allowed to advertise it there
testing more accounts wont fix it if the offer itself is causing the bans