The Problem is a dark shadow or a bad GI Setting (pic 1). With the normal Sun (Daylighttag) my Rendering is to dark. Is there any settings to make the shadow brighter?
Of cource i try an HDRI but the same Problem, it is to dark. If i set the power of the Gamma or the "Power" higher, the hole Picture (Textures) will be brighter too -> not good.

If i take the HDRI without any adjustments, the sky Looks very good but the Picture is to dark ! (pic_2)

If i put the HDRI Power up to 5 or higher the Picture Looks great but the sky ist to bright (pic_3)

hope the Problem is clear, i have no idea what the Problem is. pls help.
Sorry for my bad english.