You have 0% Withdrawal and trading fee if only you hold their coin and token in their platform. Yes it's true there is every possibilities.
Such like Binance does it and other exchange, therefore if you are making withdrawal to various networking then we can say much fee will be applied. Such as BTC, ETH they always have higher withdrawal fee unlike polygon, bsc and trc20
Maybe fore trading fee on crypto.com its free but surely there will be still some fees on withdrawals.
If I am not mistaken crypto.com also have their own coin just like binance, kucoin and others. The coin is called cro with a lion like shape/image on the coins logo. I have mistaken this coin before as brave because their logo are identical to each other. Maybe this is also the reason why the OP have not incurred any fees, he didn't notice that he have cro coins before.