A lot of people who are new to making presets increase contrast instead of using more advanced techniques and shaders. I would recommend you experiment with the shaders to to apply color grading, instead of just enabling fake HDR or levels. Sure, the shaders that increase contrast make it look "better" without much work or tweaking, but more advanced shaders that you have to tweak can look so much better, and when you finally achieve the perfect look, it is so much more rewarding.
Do not worry about it too much though, everyone who first starts with Reshade just increases contrast (I did as well). Once you start creating more and more presets, you will get a feel for which shaders you should apply, and which settings keep the perfect balance of color, contrast, and exposure.