Many traders spend hundreds of Dollars on backtesting software where MetaTrader offers a built in function for free. You can scroll back in a chart in MetaTrader and when you then hit the F12 button on your keyboard, MetaTrader scrolls forward one candle at a time.
This is a great way to replay previous price action and sharpen your skills. Some traders use the F12 backtesting method to replay their past trading week and see if they missed trades or could have done something differently.