Raspberry Pi doesn't work?

Sl
1

I got a Raspberry, I can switch it on, everything works, but as soon as I connect to the Wi-Fi, it also shows a connection, 1.) the Wi-Fi on my laptop no longer works, which I can't explain at all. 2) I can't use wlan on the Raspberry?

What's going on there? What can I change there

Ma

Is ex maybe an IP address conflict?

To avoid this, you could configure your network so that all clients get their IP via DHCP.