I want to buy some BTC with cash locally, the seller i found says : "send BTC to your wallet. After 1 confirmation On blockchain, collector takes from the table cash."
Is this enough to be sure i will receive the bitcoin sold me? Or its better to wait for 2 confirmations?
Yeah, it's possible to buy cryptos without banks. But it's very dangerous as there is a high probability that the dealer will just fool you and take your money. Cryptocurrency exchanges like cex are safer in this regard, and you can buy Bitcoins there with your cards,
https://cex.io/buy-bitcoins, or bank transfer.