Do I need to protect the cable with open wiring in the garage?

The cable is two-core, the core thickness is approximately 2 mm. But the most interesting thing is that the screen above was also copper (if I remember correctly, it is called shielded). So dude cut this screen from above and gave it to me saying the same cable only without a screen. And he gave it to me because I wanted to change the wiring in the garage. And the question is: can I make wiring in this form? Maybe you need to pack the cable in something, for example, in a corrugation or cable channel, or can you mount it on the walls without everything? I want to make a garage of plates, wiring for light, sockets and emery. There is a separate branch for welding.