Where do I have to put the Bump on my nodes? I made a material, added a bump before but it didn't worked at all.
where do I need to put the 'Bump' option on my nodes? Which is the correct place? I'm pretty new about using this.

Please help me!
Add > Vector > Bump. Connect like this:



You can also feed the texture directly into the displacement input of Material Output node and use Multiply Math node to adjust the strength.