Lenovo ideaCentre Mini wireless network

[sebul]

Hello.
I installed Debian 10.8 on Lenovo mini.

My Lenovo spec
https://psref.lenovo.com/Detail/IdeaCentre/IdeaCentre_Mini_5_01IMH05?M=90Q70006KA

I use xfce4.
I can use a wired network. But I don't know how to use wireless networks.

Help me please.