Bobr

I think Mullvad is great even if you don’t use their VPN :)

I’ve installed the template of kali-core (available by default in the template manager), them create a qube with the kali-core template, and add all the apps available to the qube. Sadly I don’t have all the apps that are normally present into Kali. Such as Ettercap and Wireshark

Maybe those apps are not installed by default in the template? Launch a terminal in the template and try to install ettercap and wireshark from there.

not in the “default” template manager how do I use that?

Never tried that, and I couldn’t find anything about installing templates from local files on qubes wiki :(
Try qvm-template command in dom0 terminal and see if there are options to install template from local files there.

So how do I to install flatpaks? (Install flatpak CLI in the template and use it on the qube?)

Dunno what is the proper way to install flatpaks, those few times when I actually need to use a flatpak, I just download it to an app qube and then launch it from terminal (I guess that’s what you’re doing as well?). I use Arch [btw] for some of my qubes, and installing mullvad browser is easy thanks to AUR :)

Ah sorry, I actually confused flatpaks with AppImages. I don’t use flatpaks at all :(

When I’m doing a Kali template it doesn’t give me all the apps that are present in Kali.

Have you installed them in the template?

And if I want to use Parrot?

If there are no templates available, you will have to either create one or use HVM. Can’t help you with either though

basically I want to know the way of installing apps

Launch a terminal in the chosen template, and install the software there like you would normally do it in the distro that the template is based on. Shutdown the template afterwards. Shutdown your app qube. Go to settings of your app qube - applications - click refresh. Move the installed app from the left side to the right. Done.

Want to set up “hacking” lab, mainly Kali or Parrot and other to use with the networking to “hack” them, basically I want to run multiples VMs

Install Kali in template manager (it is available as a community template). Create an app qube based on that template. Done.

and only on official mobile client.

This is incorrect, it is also available in other mobile clients (at least those which are forks of the official one).