Lenovo ideaCentre Mini wireless network

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.

Lenovo display not so clear.

Hello. I installed Debian 10.8 on Lenovo mini. My Lenovo spec https://psref.lenovo.com/Detail/IdeaCentre/IdeaCentre_Mini_5_01IMH05?M=90Q70006KA X window not shown. So I updated the kernel. Now, X window shown. But, the display is not clear. Help me please.

Lenovo wireless network not work?

Hello. I have a Lenovo IdeaCentre Mini 5 01IMH05. Spec is https://psref.lenovo.com/Detail/IdeaCentre/IdeaCentre_Mini_5_01IMH05?M=90Q70006KA I installed Debian 10.7 on it. How can I use wireless networks on Lenovo IdeaCentre Mini 5?