iTunes keeps asking to restore the iPod. After restoration and synced succesfully, it shows no music

Hello, I own an iPod Classic 160gb. I worked perfectly for years. Recently, it has been acting up.

Everytime I connect the iPod to the PC, iTunes keeps asking to restore it.

I restore it everytime successfully and start syncing the music. When it done, I disconnect to use the iPod but it shows 'no music'. Nothing available even the iPod's name that I've changed went back to just 'iPod'.

This has happened before and I did everything recommended on the internet and it fixed but now, I repeated the same method but nothing works.

Please anyone help? I love this iPod so much and I don't want to lose it. Buying a new one isn't my option and it'd cost too much.