You can turn off mouse acceleration through the Windows 11 Settings app. If you have a gaming mouse, you can use its dedicated software to manually adjust the mouse DPI settings.

If you don't like the default cursor in Windows 10 you can easily change it. You can also customize its color, size, and speed.

You can include the mouse cursor and pointer in your screenshots by using this built-in Windows 11/10 tool or these free software.

Nothing but a reboot will make the cursor function again, and since I can't use the cursor I have turn the PC off with the power switch.