Thank you very much for your question. It is our pleasure to answer it.

In the name of Allah, We praise Him, seek His help and ask for His forgiveness. Whoever Allah guides none can misguide, and whoever He allows to fall astray, none can guide them aright.

The stronger position is that you could make supplication in sujood during sujud in any language you speak. It would be disliked to make it in other than Arabic for one who speaks Arabic. However, for one who does not speak Arabic, they may make duaa in their native language without harm. 

And Allah knows best.