Today you can buy bitcoins almost every corner. You have a lot of proven exchanges where you can do this. At coinmarketcap you have a choice of multiple currency exchanges, here is a list of https://coinmarketcap.com/currencies/bitcoin/#markets. You should choose from the first 30 exchanges. Another option to buy Bitcoin is near your home from https://localbitcoins.com/ - you will find your location and agree with the person who sells bitcoin. Or directly for cash from bitcoin ATM - https://coinatmradar.com/. Exchanges like kraken, cryptopia will i not be named, because such exchanges are on the Internet a lot, but the last word is yours.