In my own view, you can only buy bitcoin using P2P if you want decentralized system, almost others or all others are centralized.
What is P2P? Read this thread about P2P exchanges:
What is a P2P exchange?.
There are only two P2P exchanges. They are: - transfer of coin or fiat in exchange of fiat or crypto directly like buying something from someone
- the use of P2P exchanges
The main characteristic of P2P exchange is that it is not centralized in any way. Buying bitcoin from someone and give the person fiat is not centralized, also use of decentralized exchange like Bisq is not centralized.
Use this link for decentralized exchanges:
https://kycnot.me/, but use the score to grade it. Some are semi decentralized, while exchanges like Kucoin is centralized but does not require KYC.
Try and differentiate between decentralized exchanges and exchanges that do not require KYC. No KYC needed for decentralized exchanges. But an exchange that requires KYC may not still be a decentralized exchange, like Kucoin that do not require KYC but can force you to provide KYC that requires identity verification.
This is what I read today which is a mistake from Cointelegraph, even it is they are mistakes:
How to buy or sell Bitcoin without using a centralized crypto exchange?https://cointelegraph.com/news/how-to-buy-or-sell-bitcoin-without-using-a-centralized-crypto-exchangeThe crypto industry already offers ways to exchange cryptocurrencies like Bitcoin
BTC for fiat money without using a CEX like Binance. However, such a process is associated with certain pros and cons and may require additional research.
Bitcoin ATMs
Bitcoin-enabled automated teller machines (ATMs) are probably one of the easiest ways to exchange fiat money for crypto and vice versa. Like conventional ATMs, Bitcoin ATMs allow users to deposit and withdraw money using cash or a debit card. But instead of a bank account, a Bitcoin ATM requires users to have a BTC wallet address to deposit or withdraw money.
What I know is that bitcoin ATM is getting regulated and they have operators, it requires verification for high amount and sim verification for low amount of coins. In my view, bitcoin ATM are centralized.
Peer-to-peer Bitcoin exchange platforms
Peer-to-peer (P2P) Bitcoin exchange marketplaces are among the most common crypto exchange options alongside Bitcoin ATMs. Such platforms allow users to trade digital currency directly with each other without the need for a centralized third party to facilitate the transactions.
While providing a more resilient option on the regulatory side, P2P services are often associated with security issues, according to Quantum Economics founder and CEO Mati Greenspan. P2P exchanges like Binance P2P or now-terminated Paxful and LocalBitcoins are “certainly a step in the right direction
I thought they were getting what was P2P before, but they included that Binance P2P, including extinct Paxful and Localbitcoins are all P2P exchanges, but that is not correct, they are all centralized exchanges.
Crypto on-ramp/off-ramp integrations on software or hardware wallets
Another common way to buy or sell crypto without a CEX is using an on-ramp or an off-ramp solution provided within a self-custodial wallet through a third-party payment provider.
Software wallets like Exodus and hardware ones — like Ledger and Trezor — offer several methods to deposit or withdraw Bitcoin using default software through various payment integrations. Such wallets often allow users to buy crypto or cash out their coins using bank transfers, debit or credit card payments, Apple Pay and other options, depending on the country of the user’s bank location.
Those integrated exchanges on noncustodial wallets are either instant exchanges or bank transfer exchanges. Their fee is very high and they are all centralized.
I like Cointelegraph because they give some news that are good and worth people to know what is going on but sometimes I am always convinced that they are just given newbies wrong information. This is absolutely wrong information from Cointelegraph.