From your profile I see that you are registered to insider program. Do you have Dev or Canary channel build 26058 or 26063 installed? That crosshair is new feature introduces in build 26058?
Announcing Windows 11 Insider Preview Build 26058 (Canary and Dev Channels) | Windows Insider Blog
To enable this experience, go toSettings > Accessibility > Mouse pointer and touchand enable the Pointer indicator setting. You can also search for the setting by name. When the setting is enabled, you can toggle it on/off with the keyboard shortcut,Win + Ctrl + X.