If I am not wrong coinmarketcap(CMC) shows the current market price and the total share in the market for any particular coin also called as the market cap. But the main problem is that if you invest in coins that already have a high volume then you would never be able to make the best profits.

A project that is launched has high initial potential and once the price gains stability it is just not worth investing after that. I hate airdrop coins because I have been part of many airdrops and I often get some free coins airdropped to my ethereum address but the coins are just not even worth watching their price, so if you are looking at a coin that might have potential, then maybe some coins can be found at icobench and you can actually trust their ratings because they do take into consideration a lot of factors.