With the help of atomic wallet, if you are not a daily and short-term trader and you can use this wallet both as a safe wallet and an exchange.
I have installed this wallet on my iPhone and at the bottom of the software there are 5 categories that can easily help you choose your target. The exchange section is for converting cryptos to each other, and the buy section is for buying cryptos in national currencies, and a relatively large number of them can also be used.