click event not working properly - mouse offset ?

Yes, I try to select/highlight elements that are in the center of the screen.
The user is not supposed to move the cursor separately from the camera.

My actual goal is to build a VR game in which you can open a menu and press buttons without any input other than looking at a specific point for a certain amount of time. (“On Hovered event” with a timer?)
For demo purposes, and due to not having a working VR setup right now, I’ve set it up as a first-person-game.

I started with a click instead of hovering over for ease of use.
I already tried this great tutorial that relies on “Line Trace by Channel.”

It didn’t work at first, so I tried a different approach (click events and so on).
I think I need to dive deeper into this. I will follow this video again and see if it gets me to the desired solution.

Thank you so far.