Why is the autofocus not working well?

I actually have a D7500 but I couldn’t select it as an option. But I assume they’re similar.

the auto focus is either not good or I’m missing something. I’ve tried it on everything AF-S AF-C AF-A and I’ve made the focus squares from a single point to the 3D to the full screen where it should auto. I should be able to hand my camera to someone and have it full auto and then take a focused pic of me lol. It’s like the camera can’t tell I’m the subject of the screen. I don’t always wanna teach someone the focus squares to snap a quick pic of me. What’s up??

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