I think you can download a lot of free LUTs, can't you? In fact, some offer them on YouTube for free too.
I can't remember one guy's name but he had a big pack of them for free.
Just google and look for some,
Here is what I find upon a quick look:
This pack contains 76 premade LUT filter files for use in OBS. Use these filters to give your webcam feed or video footage a film-like look. The filters were created using Blender's film color processing. The webcam presets were created by hand...
obsproject.com