Coindeal is an exchange I am actively using. This is one of the exchanges where their native token CDL makes sense. You can stake CDL for BTC rewards (7% interest is above average). The platform is user friendly, easy to use and suitable for new crypto adopters. The have also phone app. There is also waiting list for a card (unfortunately still not delivered), if you submit for the card you will get free CDL. Another way how to earn free CDL is to take part in reguar voting activity, you are given an option to decide which crypto will be listed (usually once per month) and be rewarded with free CDL.
They have opened derivative platform recently.
They are using fiat gateway so you can buy crypto easily with the fiat money. There is only constrain if you want to withdraw money that you have to pay high withdrawal fees. You can easily avoid this by withdrawing crypto to another exchange which uses fiat gateway and has lower withdrawal fees.
The Coindeal is trusted, secure and followed by many exchange which I definitely recommend.