I believe that the Coinmarketcap is the most popular resource among all cryptocurrency users. It seems to me that if this resource fools users, then you need to give not only examples and evidence of their guilt, but also give people an alternative. Therefore, it would be nice to disseminate information about other resources that would give truthful and accurate information about trading exchanges and cryptocurrencies.
actually theres no need to show for evidence because there are so many topics here if you only explore the forum about the Fake Volume from CMC here is one thread that tackles about this
https://bitcointalk.org/index.php?topic=5198316.40and these are the other crypto exchange that can be use aside from CoinMarketCapitalization
CryptoCompare. ...
CoinGecko. ...
CoinCap. ...
LiveCoinWatch. ...
CoinLib.
but of course use at your own risk
In fact, I have repeatedly met negative information about the coin market, but nonetheless people continue to use this resource. Thank you for providing a large set of examples of resources that a cryptocurrency user can use, but it seems to me that there is no guarantee that all these resources can provide true and accurate information. I do not want to seem a skeptic, but I seem to be paranoid and constantly think that everyone wants to deceive me.

Don't be fool buddy.
1) 90% information provided by most of the site are extracted from the coinmarketcap.
2) The Coinmarketcap shouldn't be blamed for the issue reported by the OP because they only rely on the information they get from the exchange site and we can only blame capital market if the info on the exchange is not intact with the information provided by capital market which was exact reported provided years back about capital market false information.