Let's say I am an holder (min 3 month). The altcoin I found are not listed in famous one like Binance. They have really low market cup: 100k.
At the moment I am just seeing them on Coinmarketcup and would like to start selecting them by the exchange they are listed.
So I would like to understand if the exchanges are good or not.
If those alts has only limited exchanges then so be it. Wether they good or not since you don't have a choice.
What I usually do, I exchange the tokens/alt to famous pair such btc, eth, or usdt and transfer eventually to other exchanges.
But if you think those alts have potentials, you can hold them on wallet you fully access. Avoid using exchanges as an alternative to wallets.