What is the top 10 exchanges which all the investors trust it?
For me
https://www.coingecko.com/en/exchanges is providing the best list of the trusted exchange site with actual volume without the manipulation that created by the marketcap site itself. coingecko is better than CMC.
There was a trust score method that can determine the best exchange site. You can get it on the cryptorank.io too.
I completely agree with you. This platform will always help with the sale and purchase of cryptocurrencies.
Also, this service gives very good statistics and information about cryptocurrencies.