How to make your own google ads design/code?

Question

Google Adsense

There was a task to implement advertising on the site (depending on his preferences, the user is automatically shown a certain block of advertising (in the place where it is provided on the site))
In general, almost the same advertising as on the toaster itself, only with, for example, a slider and not just an image link.

How can this be implemented (what tool do you need to use to create such advertising, is it possible to do just html css js code ...)?

Answer 1

Can
I show Google or my own?