The less leverage you use, the better. If the leverage is low, you will refrain from over trading due to margins. I suggest using 1: 500 leverage. This leverage will always support you in trading.
If you say it is best to use low leverage and then say 1:500 is the right leverage to use
it does mean you know nothing.
Either you prefer low leverage like 1:10
Or you prefer high leverage like 1:500
You simply can't support both.