"I tried Google Ads and didn't see any response, basically it doesn't work."
This kind of response is one I have heard multiple times from people who have tried tackling the world of Google advertising, especially in the nonprofit world. Though Google wouldn't be where it is today if this was true. I also know that many of the nonprofits I have worked with would not have seen the growth they have over the years if you removed Google Ads from the equation.