I've found that there is just not really any "general" advice for doing FB ads. Most of the advice out there is usually for dropshipping, or some sort of physical product.

So just going through my journey from the beginning with FB ads. Still new to YT so pls bear with my (non-existent) editing but I wanted to go into as much detail as possible because a lot of the content online is very deceiving in terms of how doing ads actually work. It gives you a feeling that all you need is one viral thing with low CPC and somehow magically even if your product's price is low, churn is high etc, everything will be fixed and you'll be a millionaire if ROAS = >2x.

No one really goes into detail about sucking on their first few ads, how to improve, how long you should wait for FB to optimize before pausing an ad, how much you should wait before killing a concept if its not bringing you sales, if you should keep an ad running with negative ROAS(if your product is a SaaS) and so on.

tldr; start with image ads. target immediate pain points nothing generic, calculate your breakeven beforehand. and finally your first 200-400 USD will likely be wasted on learning, both for FB and your own skills.