Radulepy I understand what you want and I did exactly the same when I started publishing my games on iOS and Android. But it's pretty simple when it comes to ads. A company pays for clicks because they may generate a sale for the company and they only want people to click the ads if they are interested in the product.
There are exceptions and some ad providers allow this but as Eisenhans said I don't think there is a simple solution to get it to work on C2 games.
And if I wanted to advertise one of my products I would never do it on a platform that allows developers to trick people into clicking on ads or even "watch this ad to get free gold". That is just really unprofessional and only gives you traffic that end up buying nothing.
So don't try to earn an income by tricking people to click ads. To earn a good profit on ads in games you'll need thousands of users or many apps with a decent amount of users. Thinking you'll earn anything of interest on an app with a few hundred downloads is just a dream
I actually got banned from admob because my friend clicked a couple of times (4-6 times) on an ad in my game and it was a hazzle to get them to release the ban again. So they will notice if you try something I've even heard that some developers download other games that are similar to theirs and click all the ads they can to get the developers of that game banned from ad income :/
One thing that actually generated alot of clicks was the lag/delay on the admob/mopub plugin which made the ads pop up later than expected which resulted in many miss clicks on my game. So that was an unintentional way of tricking people to click ads. But even that would be a problem in the long run on most ad platforms.
But I hope you'll find a good way of generating an income. Good luck on your project