Why does my lock screen date, time, flash light and camera icons disappear?

I have an iphone x and i am on the latest ios 11.2.6. So what happens is that my lock screen date, time, flash light and camera icons disappear, the animation for unlocking my iphone also disappears. This has been happening for almost a year and a half and it’s getting really anoying. What i have to do is restart my device for everything to appear again but after some time they disappear again. I had an iphone 6s before and the same thing happened on that phone. If anyone has some tips I will appreciate it.