As a photographer of many years I always respond to questions like this by saying. Where do I find "free" marketing for my photos?

If you want generic "stock" images to market and advertise something then you will have "generic" marketing. If you want your marketing to stand out from the crowd. If you want it to be unique and impactful, hire a great photographer to create something unique and impactful and empower them with a budget to do it right otherwise you're just white noise.