overlay an image to give a texturised look

Hi everyone,
I am looking for a way to apply a texture image on all 3D objects on my scene to give a paper texture effect. Ether directly on the objects or on the screen. I am also looking for the effect to be optimised as the project is for mobile device.
So far I only found 1 asset for this but It doesnt work with unity general render pipeline.
What would be the best way to do this ?
By post proccesssing ? shader ? light projection ?

Thank you for any input !