Why does an image imported from Photoshop to Unity change its colors?

Both programs being set to sRGB mode and gamma correction at Project Settings>Player>Other Settings>Rendering>Color Space are set to Linear or even Gamma does not matter.
I formatted the C drive and reinstalled Unity from scratch, but it didn't help.
When I reset the settings in "Project Settings/Player", it changes from linear to gamma and then the colors are fixed. My question is why can't I have linear like everyone else? The quality is still poor despite the settings in the inspector quality set to "none".