I tried DXGI.dll, D3D11.dll, ReShade64.dll in the same directory as .EXE, but it did not work. There is a sub-directory "Galaxy" that contains the game's D3D11.dll, DXGI.dll, and XInput9_1_0.dll. I tried pasting ReShade there too and using ReShade64.dll since D3D11.dll and DXGI.dll names were already taken. It did not work. Any ideas?

I got it to work by renaming the game's original D3D11.dll to D3D11X.dll in Galaxy folder and then using D3D11.dll for ReShade. I just wonder if I messed up the rendering of the game somehow by renaming that file...

GOG injects it's "GOG Galaxy" overlay functionality via the included D3D11.dll in newer games from there but it can be removed safely if you don't need said overlay functionality and if ReShade doesn't inject via other valid .dll names.
(D3D9.dll, OpenGL32.dll, DXGI.dll and D3D11.dll)

Yup its working -> BIG THX
Just Rename Galaxy folder, and its working like a dream

EDIT:

I've tried all the suggestions on this thread and nothing works. I've also tried renaming the dxgi.dll of reshade in reshade64.dll and tried with dx9 dll.
Nothing of these works. In both dx9 and opengl the game crash ( lol i know the game doesn't run on these binary but i had to try XD ).
Whatever i do in the galaxy folder ( erasing or renaming files... or even renaming/erasing the folder ), the game work only if any dll of reshade is in the root.
If so the game doesn't start. If i simply install reshade and i don't change anything else, the game runs but it ignores reshade.
I don't know what else i can try