I cannot find where apps installed from the built-in software store are in files!

[Snotchy]

i have been looking everywhere online for something that actually says where the executables you get from the built-in software store (and maybe also the terminal from sudo apt install) and just can't figure it out! and also i dont have a "lib" folder inside /var which is where alot of people said app files are

please help

[Ponce-De-Leon]

Your comment and Your 2nd Picture are mixing here some Stuff. A flatpak is not an APT Package. Only to say that clear.

Flatpaks, You can find in /var/lib/flatpak/ and the lib Folder ist there:

Alternatively, You can open the Terminal and type cd /var/lib/flatpak/ and then it navigates You in the folder. When You then type ls it shows You what is in the Folder.

[Snotchy]

alright i found /var/lib (it doesnt show on dolphin file manager for some reason???)

and in /var/lib/flatpak which folders contain the executables themselves?

[Forpli]

I'm not sure because I have no flatpaks on my system. Try to open the file

/var/lib/flatpak/app/NAME-OF-THE-FLATPAK

and search for a file that ends with .desktop, this is the launcher for the flatpak.

The .desktop files for flatpaks can also be here (press ctrl+h when you have opened your filemanager to show the hidden files):

~/.local/share/flatpak

or maybe also here
~/.var

Note: There are only the flatpak ones. .deb packages or snaps are not saved at this place.

The .desktop files of .deb packages are saved at
/usr/share/applications/
and
~/.local/share/applications