Comment by JohnMakin
I personally have never had any kind of positive ROI from online ads - I'm skeptical many people do and have a conspiracy theory it's all a scam except for maybe a small percentage of users. I know factually this can't be true, but IME, I cannot fathom how anyone returns a positive ROI from online ads in this climate.
Imagine a marketing/advertising professional said, “I’ve never had any kind of positive ROI from trying to write software.” What would you think their issue is?