1. Time for you to learn how the crypto or any markets work.
2. Make a coin, make 5 accounts each for yourself and sell and buy from yourself on auto every day. You'll lose money for sure, but you can see your rank on CMC go up;)
more or less how it works as you say, this is really called market manipulation. I will not take this kind of part because it is very risky
3. CMC is not a bad guy. He just shows you the data the way it is shown.
true, there is nothing we can blame on the coinmarketcap site. this is not their doing because they only record what happens in the market whether the market is being manipulated or not but everything will be recorded there