It's generally recommended to avoid trading at the sideway market in forex trading, as the lack of clear market trends can make it difficult to predict price movements and can lead to increased risk of losses. It's important to wait for clear signals and trends before entering into trades, and to use tools like technical analysis to identify potential entry and exit points. If the market is in a prolonged sideways movement, it may be best to sit on the sidelines and wait for better trading opportunities to present themselves.