Nice example of such platform is buycoinnow.com. You can purchase BTC there by credit card without registration and sharing you personal data. It is good for the beginning because if you are a trader you will have to transfer these coins to some crypto exchange over time
yes, I can also recommend
buycoinnow. I consider it as a basic website, so it's not only for beginners. I use cryptocurrency exchange because of trading, but sometimes I also decide to buy Bitcoin by credit card because of fees (for example).