Intel Centrino Advanced N 6230 AGN WiFi disconnects

Hi all,
I started using Kali today making a fresh installation on a laptop with no other OS.

Kali version: 2021.1 - kali-rolling
Kali installation: HDD
network adaptar: Intel Centrino Advanced N 6230 [Rainow Peak] (rev 34)

iwconfig output
wlan0 IEE 802.11
ESSID: off/any
Mode: Managed Access Point: Not-Associated
TX-Power= 15 dBm
Retry short limit: 7
RTS thr: off
Fragment thr: off
Encryption key: off
Power Management: off

Rest of my devices (Win, Android, iOS) running smooth on the network. Host is a AVM Fritzbox 7590 in a mesh setup.
Anyone got an idea what I could do? I am very new to this topic so any help would be great. Thank you.