Hey there, I used to spend a couple of years before I found some reliable one. I believe it is quite obvious that the key is a reliable broker. Everyone knows that. I recommend to have a look at bitcoin brokers
https://www.forex-ratings.com/forex-brokers/bitcoin-forex-brokers.php I used to work with two years. They guarantee safety and you can be sure there won`t be any fraud. Good luck. Hope it can be helpful