A Forex bot is a program that executes trades in the currency market automatically, based on predefined rules. Instead of a human watching the screens and pressing the buy or sell button, the software does it on their behalf, following a strategy that has been defined in advance.
In practice, a bot connects to a trading platform (such as MetaTrader 5) and continuously monitors prices. When market conditions match the strategy's rules, the bot opens or closes positions without human intervention.
The main advantage is not speed itself. It is the removal of emotion. Fear and greed are a trader's biggest enemies. A system that follows rules does not panic in a drop and does not get greedy in a rally.
But a bot is not magic. It is only as good as the strategy behind it. A bad rule, automated, simply loses money faster and more consistently. That is why the goal is not "a bot," but a strategy that has been proven on real data and stands the test of time.
When evaluating an automated system, don't ask "how much does it make?" first. Ask "how does it behave when it loses?" and "can I verify its results independently?".