Can a camera look be achieved with camera in blender

Not sure if this is the correct category to post this question, can this camera look be achieved for render in Eevee or cycles, or is this something that has to be done in Post?!
I other words, can I attach a PNG to a camera to achieve this in real time or in final render output, or is this something that can only be done in a post production process? Thank you in advance for any advice.
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In other words, can I do this by attaching a PNG to the camera, or does this have to be done in a post production process? Thank you for the help in advance.

I would only do the “attach PNG to camera” method for quick visualization in the viewport. For the final product, just overlay it in the VSE using sRGB color management (only after the underlying frames have been through filmic).