The issue I have is managing my wlan0. So during installtion my wlan was picked up correctly. I can find the network configuration  now in /etc/network/interfaces.
I have multi networks that I need to switch between them and I'm unable to do so.

I added them to wpa_supplicant.conf as per Network Configuration but I can't change to the new networks. It won't be picked up and that would leave the interface down.

# The primary network interface
auto wlan0
allow-hotplug wlan0
iface wlan0 inet manual
       wpa-roam /etc/wap_supplicant/wpa_supplicant.conf
iface default inet dhcp

The only way I have to change the ssid in the /etc/network/interfaces and ifdown wlan0 and then ifup wlan0.

On addition when I boot the interface is always down and in order to bring it up  sometimes I  have to run

sudo pkill wpa_supplicant
sudo ifup wlan0

Noting I can scan my ssids correctly
sudo iwlist wlan0 scan | grep -i ssid

I wonder if someone can direct me on how to fix this? I tried insall the network-manager but it only showed me the wired networks no wireless.
In the old days in Linux and still till now on BSD we use ifconfig, but it doesn't seem it is working now adays in Linux anymore.

Happy to share more logs if required