if you take raw price data construct candlesticks by shifting start time to even 1 sec you can get completely different candlesticks. Where old ones indicated some pressure (bullish or bearish, based on candle patterns) around particular time, new candlesticks may indicate there is no such pressure. This reasoning shows that candlesticks and genuine bullish/bearish pressures are likely unrelated events.I assume it’s important to pay attention to all aspects of charts.
For instance if you use a Japanese candlesticks chart then you can look at the size of the candle’s body or even the wig. If the wig is long then it could be a sign of price reversal within the next candles.
Timeframes are also important to look at. If you trade on a 1 hour timeframe then I believe it’s recommended to follow the H4 and M30 timeframes too. Just to be aware of what is happening with the higher/lower trends.
Eventually the number of trading signals taken from charts is limitless. Everything is up to your level of expertise.