Is it possible so the bake in the second photo using substance can be done in such a way that its viewed the same way as it is in the first image? This is for first person so the player would see the details at the angle theyre looking at it from if that makes sense.
"And I have no idea why the front view has this darker part in the model" : upload your model. "all metal-like textures are way too dark" : too dark compared to what ?