does anyone know where i can use a link to my site to make ads, my site has no products its an information app, i need to bulk make ads for it?

i really like this idea, as a business owner without an actual product to add to adverts, ive been searching for something that can turn webiste links into ads, i just have one question, do i get to make one just to test and see if i like it before i buy? or did i do something wrong, or missed a step? i created a brand got all the way to generate then couldnt. please let me know, im desperate for something that can help me turn a webiste into ads without having a physical product to "photograph"or add in as image.