How do i track my comparison site results??

Hi Guys!

I'm promoting an online casinos comparison site with Google ads and other networks, and i just struggling with tracking stuff there. I'm using analytics to see my events that I'm getting from each casino in my list, and i can see the campaigns that i run when i buying the traffic from google for ex. but the problem is that i can't see them together and optimize the buying together with the event so i cannot see the conversion I'm getting from each specific campaign.
Sooo i would love to hear about some tracking solution that i can use for my business so that i will see the results by the campaign and to have all tracking options that relevant for comparison (affiliate) site.

Thanks a lot

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