How's your usage looking now?
I pretty much stopped checking battery life and started to just plop it onto one of my 2 wireless chargers whenever I'm sitting around the house. But with normal use I can get over 8-10 hours of use over an 18 hour day without touching my iPad (but while using my apple watch for Siri and Notifications - I have "Hey Siri" turned off when my phone is locked).
I've gone 10 hours of use over 22+ hours before. However, if I have my iPhone X in-hand and constantly use it for on screen app usage without putting it down, then I can run it down in 7-8 hours with 8-9 hours of standby. I'd guess if playing games or actively using GPS I could kill it in 6 hours like in the videos I've seen on YouTube, but I don't use it like that.
I have not turned off animations or used low power mode, unless I get a low power warning and then I might if I'm not about to go to bed and charge soon.
Things I do to save battery. (1) Keep the screen dark or dim - I don't like to invert screen colors most of the time, so I keep brightness below 10-20% with a normal screen. I can go well over 10+ hours with 18 hours of standby if I'm mostly reading an eBook with a black background and white text, and I answer calls and texts with my Apple Watch. If using the X for phone calls on speaker then I sleep the screen (it also turns off when holding it to an ear). I have not tested call with blue tooth on all day (I hate stuff in my ears).
(2) I'm mostly using Safari browser for Facebook and Youtube, until the app developers get their act together. If you use these apps keep location and background app refresh off, and force quit the apps when not using them. I'll use the apps if I know I have a charger nearby.
(3) I have push mail on for hotmail and my two iCloud accounts. I have manual fetch for the other email accounts.
(4) I turned off background app refresh for about 200 of my apps (esp Facebook), but I still have it turned on for 82 of my apps - including but not limited to 1password, amazon, amazon music, xfinity connect, dropbox, ebay, fandango, fantastical, flickr, gmail, google maps, healthmate, ibooks, instagram, kindle, macID, maps, messenger, misfit, movies anywhere, news, next-door, nook, notes, outlook, pinterest, flex, podcasts, pockemon go, Ring, Skype, snapchat, spotify, starbucks, Subaru Starlink, weather channel, twitter, venmo. wave, weather, yelp, youtube (I use the app when plugged in).
(5) I have set "Location" to "When Using" for almost everything, except for having it "Always On" for Xfinity Connect, Phillips Hue, and Tile. I do have Find my Friends turned on all the time as well.
I did check it most recently about 5 days ago, and was at 51% after almost 14 hours of standby with 5.5 hours of use: