All traders want to always buy Bitcoin at a price cheaper than the market price. Apart from buying and selling on the ordinary, centralized crypto asset exchange, there is another option, namely a peer-to-peer exchange.
You probably will get a cheaper price than in the common exchanges (DEX/CEX). But, will it be a high gap in price that you will get? Additionally, a transaction in P2P mostly will take longer time, this is not exactly available for fast transaction. So, if you are a trader or arbiter, it will not be suitable for you. It is good if you are not in a hurry and only make crypto for long term investment.
Then, P2P commonly also has low trading volume, so it will impact on the low chance to be successful in the transaction.
So, should we really use P2P? Once again, it needs high carefulness if going to do P2P transaction because there is a higher chance for scams.
Whatever the choice of exchanges or ways of the transaction, it should fit your needs and strategy.