If you've had your iPhone X for a while, you've probably got the settings set the way you want them. I thought so, also, but out of curiosity I read the following two articles and found some that I changed.
One setting in particular was aggravating to me: every time I touched my iPhone X the display woke up and consumed battery power. I didn't like or want that. Way too sensitive I thought. I found a tip in the second article on how to turn that feature off. It took me so long to get that setting set to my preference.