Reload Iwlwifi

I've been having issues the last days where the internet connection was very bad when using my old Dell laptop and watching videos in brave-browser - in the Zorin 18 Core live session and on the bare metal install of Zorin 17 Lite.
Because I thought I have an Intel wifi card (I'm no longer sure and look later if that is right), I tried to run the

sudo modprobe -r iwlwifi

command to remove the kernel module and then to reload it, but that crashed in both cases the computer. The screen showed only a black background with some stripes and was unresponsible.

What am I doing wrong? Do I need to stop NetworkManager first? Or close the brave-browser?
I used that command a while back, and it worked fine then. Unfortunately, I don't remember if I did anything differently back then.

It should not behave that way, I'm confused. Is the command only for specific kernels? In the live session I was running 6.17 kernel, on bare-metal liquorix.

I tested the command on my newer Dell laptop, and there it worked fine without stopping the NetworkManager before or closing brave-browser. The video stops and is not shown during the process, but the computer doesn't crash. And afterwards, the video appears again.

You can identify your WiFi hardware and what driver Zorin is trying to use for it with these commands:

If integrated WiFi

lspci

If a USB adaptor:

lsusb

Also in general:

sudo lshw -C network

When You not sure, You should check that first.