Movies often show a situation where the hero bets all-in with a “junk” hand, everyone around gets scared and folds, and the poker player takes the money and leaves with the beauty into the sunset. In reality,
bluffing all-in with a weak hand will most often result in a loss of money, so if you want to risk your entire stack and "squeeze" your opponent out of the pot, there must be good reasons. For example, your opponent plays extremely cautiously and folds to any aggression.As for tournament types of poker, the important point here is the right time for such a bold bet as all-in. It is also important whether rebuys are provided in the tournament - the opportunity to buy an additional stack equal to the original one. And when exactly can it be done.