When you say "ads cover my whole websites," do you mean that you see actual clickable ads all over your pages? Or are you looking at your site with the Ezoic Chrome Extension and seeing big squares and rectangles of different colors all over your page?
If you are seeing the colored squares and rectangles, those are just placeholders indicating where Ezoic could potentially place an ad. Placeholders are not ads. They are bits of code that are unseen to your readers, but that tells Ezoic where it could place an ad. In my experience, Ezoic won't necessarily use all of the available placeholders at one time. They will use different combinations from the placeholders that you have on your site.
One more thing. If you are actually seeing live clickable ads on your pages, remember that it's possible that no reader will see the same combination of ads in the same locations as you see them. It will depend on the device your visitor is using to visit your site, the screen resolution of their device, their location in the world, and a whole sack full of other criteria.