Ambient occlusion in American Truck Simulator?

Hi there! I'm trying to apply any (SSAO or HDAO etc) ambient occlusion types via reshade but seems not really working. Any idea? I'm in a very noob state for now hehe.. Thanks!

Don't own the game but according to the game compatibility list their previous game (euro truck simulator 2) only had depth buffer access in OpenGL mode, maybe it's the same here.

Thanks for the reply : i've found about the manual flipped depthbuffer in reshade.me/forum/shader-discussion/601-manual-depthbuffer-flip?start=24#12477 but cannot understand very well what lines in the code and/or where is it the .cfg file to try to solve the problem.
Sorry for my shitty english...