Boss nothing is manipulated. NG contract on MCX follows NG traded on CME. Tick to tick. Else there is arbitrage opportunity. Total no of buying quantity or selling quantity in market is useless information. The contract moves exactly as per moves in NG on CME.
Secondly, NG has absolutely no relation to Dollar index or any other thing at all. No data release has effect, No FOMC decision has effect, no NFP nos have any effect. The only thing it reacts to is weekly inventory nos on Thu 8pm. That's it. Everything else is all natural supply demand