What Do You Mean, Strategies?
Strategies aren't really necessary for geometry dash, it's all practice and timing your jumps correctly, right? You would be slightly mistaken. Strategies in geometry dash from my perspective are things to ensure you're doing whilst playing the game.
Watch The Whole Screen
A lot of people actually don't do this, and instead look directly at the icon. Instead of this, look for incoming obstacles and then time when to jump. This can save you from dying so many times in those easy 2-4 star levels.
Never Have A Distracting Icon
This one is much less important, but can sometimes save you in the long run. Making sure you don't have a distracting icon ensures you are still looking ahead rather than at your icons bright, distracting glory.
New Strategies Coming Soon!