How not to show the site to bots coming from Direct?

Question

contextual advertising

The bottom line is this - the crisis is not a crisis - we pay for advertising, namely Yandex direct and Google ads.
Too bad they work, they bring customers. We noticed that during the time of "self-isolation" the search engines somewhat moderated their appetites (or clickers, xs ...), but there are visits of bots, and a lot. When there were fat times, at the very least they put up with them as inevitable losses. But now everything is alles, you have to bug, and it hurts right away.

It has been repeatedly noticed that bots use the HTTP/1.1 protocol.
Observing the raw logs of the web server once again found confirmation of this.

The question is how not to show the site to bots that have a GET /?yclid=6875647658769456 HTTP/1.1 referer
and show it only to users if several conditions match
1. protocol HTTP/2.0 + referer GET /?yclid=6875647658769456 HTTP/2.0

2. add Yandex Direct and Google Ads bots to the exclusion list - they periodically check the site for availability

3. it is very desirable that when a ghoul enters the referer GET /?yclid= 6875647658769456 HTTP/1.1 money was not debited - or is it technically impossible?

Answer 1

well, you have all the conditions, code
another thing that they have already clicked on the ad, you can remove / not show tracking pixels, or align utm in the statistics to understand the volumes at least
completely on the Google / Yandex side, you won’t be able to remove it
, and Kulgin look at YouTube, something he offered there (by IP, add to the exceptions, or something)

Answer 2

There is no explicit recipe for this, as long as there is no responsibility for this fraud, not from bot growers or from advertising sites, you will continue to be deceived. Better look for other ways to find and attract customers. Considering those click bots that I saw on youtube, you will not get normal protection in any way. Even cutting off the Amazon ip is not a fact that will help.
As long as the advertising platforms are white and fluffy, all this will only continue and advertisers like you will pay for this banquet.