Doesnt show all the apps

[Alphawarriorplayz]

Where are all of the apps like pop!os shop

[nmendozam]

I have the same issue. I'm running this app in fedora 33. The command echo $XDG_DATA_HOME returns nothing, so I guess it's taking the apps from ~/.local/share/applications/. But, even some apps in that folder don't show up. Does the content from the .desktop flies affect?

I have some specific files, Tablet does show up in the app, but Matlab does not.
Here is the content in matlab_r2019a.desktop file:

#!/usr/bin/env xdg-open
[Desktop Entry]
Version=1.0
Type=Application
Name=MATLABR2019a
Icon=matlab
Path=/home/nico/.matlab
Exec=matlab -desktop -prefersoftwareopengl
Terminal=false
Categories=Development;Math;Science;Education;

And this is in Tablet-0.desktop file

#!/usr/bin/env xdg-open
[Desktop Entry]
Type=Application
Name=Tablet
Exec="/home/nico/.local/share/Tablet/tablet"
Icon=/home/nico/.local/share/Tablet/.install4j/tablet.png
Categories=Application;

I hope this helps.