20W plug and Type C lightning cable not charging iPod touch 7 gen

I’m trying to charge my I pod 7 gen and I have a 20watt plug and also a type c lighting cable and when ever I it plug in to the wall it doesn’t what to charge and I have to keep on asking my friend to charge and it works fine for him

[Re-Titled by Moderator]

Original Title: I have a 20 watt plug type c and I also have a type c lighting cable and I’m trying to charge my I pod touch 7 gen but it won’t charge