Face ID can’t be fixed

I’ve had problems with my Face ID for a few days now. But every article i look up seems to tell me to check my Face ID settings. Obviously this is a good idea, the problem is that this setting doesn’t exist. I just can’t find it, I’ve looked it up in the search bar but the only thing that comes up is Accessibility>Face ID&Attention. Those are not the features I’m looking for. I’ve also tried to solve my problems with Face ID differently, like rebooting and installing the newest updates, but nothing works.