You need to be relevant.
If you are promoting a "Health Supplement Offer" your safe page also need to be totally related and relevant to that offer. Your Safe page must have "Privacy Policy" , Terms of Service and details how customers can contact you. Do not use "Adult" or "Spammy" type of images on your safe page. Keep the safe page clean and relevant to the offer. Most people who get their campaign blocked after few days because they do not give time to build a proper safe page. A properly created safe page will lead your campaign working for months instead of for days.
Spammy Ad copy and safe pages might pass the auto review but you will be hammered with a manual review soon.
Your Facebook Ad Copy will need to precise and a clean copy. Do not use words in your ad copy which will lead to direct BAN.