First of all, P2P is the process of performing cryptocurrency transactions directly between two people without middlemen and third party intervention. It allows you to determine your best price.
The full meaning of p2P is: peer-to-peer
When it comes to p2p, there is no third party involved. But transaction is not possible without any reference. So he can be called.
for example: Binance
Binance acts as a third party in any transaction.
for example
If someone does not release after receiving the payment. Then the seller can appeal against it, against which Binance takes a strict decision against him. And if he doesn't release, all his transactions are turned off.
An important thing is that to buy and sell through p2p on Binance, kyc must be verified. No one will cheat after kyc verified.