as for me the safest way to buy bitcoin is to buy it at well-known and trustful exchange. you will save your money and your nerves.
Bitcoin is one of the cryptocurrencies that we need to keep or else someonw will will snatch it, But in buying nitcoins we need to assure that the sites that we will try to buy on ot must be legitimate and not scam. Like in Coins.ph wallet here in Philippines, We can easily cash in our money in wallet by going to 7/11 branches and convert it to bitcoin. We must aware of the sites weve always enter.