Cryptocurrencies can be advertised in various places and formats - there are a lot of options and this is not a problem. But the fact is that in some countries such advertising can be prohibited and it is blocked. But, for example, there is a BitMedia cryptor -skirmal network, which can help with providing advertising campaigns. I somehow read on their site about different types of banner advertising
https://bitmedia.io/blog/best-banner-advertising-cases. A very interesting approach and most importantly - productive. Yes, and it is always worth considering the settings of targeting, as this affects the result.