Which is better: Invest my Bitcoin on legit mining sites and purchased power before the halving because it is currently cheap or save my bitcoin and trade it after the halving because its value might be doubled?
Better is to go after halving, because based upon the effect on the halving mining sites will fix the price. So accordingly you have higher possibility to get additional income.
What you said is right..this time it was very low value, when compared to 2009 halving.