Using Exchanges p2p trade means the exchange is connecting you the seller to a buyer you may have never known before the person on the other end either could be a some that abides to law or could be a fraudster, or something even worse that. You should care about your privacy at every time.

As a seller using an account that has your mobile number (like an opay account that removes the first zero in your number and uses as your bank account ) can be a mistake if you want to protect your privacy.

A buyer who already sees your mobile number displayed as your bank account don’t need to ask you for it anymore and many of them already jump into your dm without any permission sending you messages even though that they can just chat with you there on the exchange that is an attack on someone private space.

That’s not all you could be in more danger having your mobile number on an exchange

https://www.security.org/digital-safety/phone-number/#:~:text=Can%20someone%20hack%20your%20phone,account%20takeovers%20and%20stolen%20identities.

This article exposes some dark things that can be done if your mobile number gets to the wrong hands, I recommend to read. We can’t completely keep our numbers a secret because we are on groups on line like WhatsApp and some applications request phone number but we can actually have control of our numbers being on an exchange. If you can avoid it then you should rather use a bank account that is not in the form of your mobile number don’t say it doesn’t matter.