Has anyone had similar leak. It looks like rear main seal but bolts around transmission oil panel are very wet and also lot of upper areas.

 

It is Mazda 6 2016 Skyactive

 

Welcome to the forum
The first thing as that oil leak has been going on for some time judging by the dirty and oil condition of the pictures.
So first thing I recommend is giving the engine and transmission a complete washing/cleaning. Use some simple green or something similar in the area's that has older oil saturation because the oil has not caked on engine parts.
Then once the engine is clean you will have a better idea where your oil leak problem is and a plan of how to correct them?

 

1st guess is oil sump leak, 2nd guess is rear main seal.

But guessing is bad, so do what Callisto said.