The dealer has a significant advantage in the beginning because the player acts first. Often the player busts before the dealer do anything. Different games and rules sometimes shift the house edge even higher, but you can counteract that by using a good strategy.
Understanding blackjack strategies and the right timing can improve your chances of winning by a lot. With good strategy at a standard table, you can expect a house edge of as low as 0,5%. But, inexperienced players often face a house edge of up to 2% and even more with some non-standard rules.
Blackjack games can have some of the lowest house advantages of any casino games, but to capitalise on the possible edge, you must have the right strategy.
Other Players Can Influence a Blackjack Game
Let's set the scene: the dealer draws a weak four, and all the players at the table make the right play by standing on all their totals. All the players except one. The last one takes their time and ends up deciding to hit. He receives a picture card and is out.
Then the dealer flips a picture card and draws a 7 to complete the 21 and wins the game. It may seem as if the last player was the reason for everyone losing as he didn't follow the standard strategy.
Of course, if this player had stood, the dealer would have busted, and everyone would've won, but it isn't entirely their fault. However, dumb players statistically have the same chance to cause a winning result for the table as a losing one. Inexperienced players making mistakes at the table can get irritating. Still, there is no mathematical proof that they will affect your long term game unless you allow their mistakes to make you emotional.