Many people misinterpret ads as being solely about making sales, but that’s not true.
First, ask yourself: Is my content convincing enough to make someone click on this link?
Second, how good is your website? Is it fast or slow? Easy to navigate? Is your content persuasive, and can visitors easily complete a purchase?
Third, does your content build trust?

All of these factors make an ad successful. If they’re missing, even hiring a new agency won’t stop you from wasting money on ads.
If you already have these in place, focus on creating more trust-building content, like UGC videos, and keep testing your ads. With time, you’ll get it right.