Follow Up leads on different channels to increase response rate…For B2B for example use mail and linkedin. Send them a Mail one day after they were created in your CRM. Then search for them on linkedin to send them a (different!) message. So you have two options to be recognized and the advantage in linkedin is that people do not have as many direct chats as they receive emails in their inbox.
The big Problem of paid ads is most often the conversion on the landingpages. The best hack is to use instant pages all the platforms