Many traders consider 2x to 5x leverage to be relatively conservative; leverage higher than 10x can significantly increase risk.
Trading always involves risk, and there is no sure-fire strategy. If you are new to trading, it is important to educate yourself, practice risk management, and start with small positions.
Before implementing any particular strategy it is recommended that you do thorough research and possibly consult with a financial advisor. In addition pay attention to the terms and conditions of the trading platform you are using.