The exchange platforms are there for use and a discount sale from a cryptocurrency should not be a reason to land is in bigger problem that we are innocent of. My uncle will always tell me to beware of cheap articles.
That is the main job of exchanges, they ease our stress of buying Bitcoin through the risk of p2p that might lead you into big trouble because no one should be trusted with your assets, and your Bitcoin savings is supposed to be your personal thing, not something everyone close to you should even know about because anyone can set you up just for money.
Instead of most of using exchanges as our wallets to save our crypto investments, used them as a marketplace where you can buy and sell your crypto coins only, and send your assets out of the exchanges to your personal wallets with immediate effects because the security of your coin lies in your hands.
Physical p2p might be the best but has nerve been something I will trust.
Exchanges are really smooth and easy to use all they need is the first guide that's all, most exchanges have veey easy user interface to interact with, ones with easy navigations. Most people don't need any tutorials before they get used to the exchanges. I don't recommend buying Bitcoin from vendor's or p2p agents outside an exchange because only God's knows where they got those bitcoin from, it could be some stolen bitcoin that has been tracked down for a while and the next thing you just mistakenly bought them and send it to an exchange or any platform with your KYC in it, it would take long before the agencies track down and reveal you as a scammer for having part in the stolen crypto.