This function is called dynamic feed.
https://support.google.com/google-ads/answer/31245...
Not to show ads to those who have already clicked on the link will not work, but you will be able to show modified ads. And in cases where you do not get in the snippet of contextual advertising for the user, then you can not see such users in the statistics of advertising. Accordingly, with the same keywords, one time to show ads, and the other - not to show ads, will not work.
If you direct to the same page - then the user will have the link highlighted as visited. So, the user himself will see that the link was visited.
https://support.google.com/google-ads/answer/31245...
Not to show ads to those who have already clicked on the link will not work, but you will be able to show modified ads. And in cases where you do not get in the snippet of contextual advertising for the user, then you can not see such users in the statistics of advertising. Accordingly, with the same keywords, one time to show ads, and the other - not to show ads, will not work.
If you direct to the same page - then the user will have the link highlighted as visited. So, the user himself will see that the link was visited.