Online blackjack is one of the best paying casino games to play. It’s fun, simple to play, and the odds are favorable. But to get something out of playing blackjack, gamers must use a perfect strategy. If you don’t have a proper plan in place, you can make a costly mistake that can deplete your bankroll in a heartbeat. So, what are the most common blackjack mistakes to avoid in 2021? Let’s find out!