Bad Internet through Fritzbox stick?

Have bought a Fritzbox Wlan Usb Stick, although I have a Vodafone router. Does not matter which provider?

Because normally I've always had / had 20-40 (on my laptop) ping and since then have pinged an 80-120.

Is it because of the stick?

And should I buy another stick (no Fritzbox). Will it be better then?

Did you have a connection via cable before? That would explain the longer term. Another stick would not help there, at most another wireless protocol.

That does not matter which company, how do you have your "normally worth" measured via LAN cable?