AP to Go for the Raspberry Pi?

Hey!

My idea is to create a hotspot on the raspberry pi using Kali Linux.

BUT: I don't want it to be a bridged hotspot. (Without internet access)

So that you can access the Pi with SSH or VNC when you have it in, for example, your backpack, powering it using a powerbank. That were an easy way to create Rogue APs and not having an ultra suspicious blinking device full of antennas and a keyboard in your hand. Do you get it?

So here is my problem:

I can't find ANY working instructions on the internet how to do a non bridged AP. I tried it myself but it won't work.

Please help me.

Best regards!