Tow problem 1 My camera does not appeare in the config so i cant active the cam / 2 help for install

so 1 my camera does not appear either with the desktop or on the config I cannot activate it 2 i try to install an Object Detection with a tutorial but i have an error and i don't know how to solve it. The installing is blocked at the last line indefinetly it say "Installing build dependencies . . . \ " and i don't kwon what can i do somebody can help please

You don't have to activate the camera in the latest version

Does it also get stuck at that line repeatedly, and how long have you waited?