Poker is a game of cards where players make the best five-card hand. The game has hundreds of variations, but they all follow the same rules. In each betting interval, each player puts chips (representing money) into the pot according to the rules of the game. Each player can fold, check (not put any chips into the pot), raise, or call.
Every player has a few bad beats. These are often caused by bad luck and not sound play. The game is mostly a skill game, but luck determines a large percentage of the results. If a player is down a lot, he will get discouraged and start playing worse. This can lead to multi-buy-in downswings where the player loses much more than he wins.
It can be maddening to be down a lot of money when you could have won more. Some people lose so much that they think the game is rigged. Others write long rants on the Internet or type ANGRY COMMENTS ALL CAPS in the chat box, neither of which helps them improve. A better way to approach this problem is to try to understand the nature of poker. This requires some studying of the game and the strategies of winning players. It also means talking to the people who beat you and letting them point out the things that you are doing wrong. Having someone who can analyze your hands can speed up the learning curve.