these are the applications that came out of the box with endeavour os budgie , i dont know how to use them , or what are their purposes, which means i dont personally need them . So can i delete them , What harm woould deleting them do to my os
The first six in your list are system requirements, but you can hide the launchers in the menu. I’m not familiar with the last four in your list (never used Budgie).
Probably because you didn’t tick the box for it when installing the OS.
If you need help in hiding the launchers, just ask.
Basically, in a terminal window, navigate to /usr/share/applications
the find the appropriate dot desktop file (.desktop)
then
sudo mv launchername.desktop launchername.destop.bkup
and that launcher will not be listed anymore. Using this solution allows you to re-instate launchers in the future if you decide you want to use them by removing the .bkup from the launcher name.
If you use this approach, the .desktop files will be restored next time the package is updated.
Depending on what DE you are using, there may be GUI tools that allow you to hide these but if you need to do it by hand, it is better to override them in your home directory than to make changes to the system files.
If you copy the .desktop you want to change to ~/.local/share/applications/. Then edit the file and change noDisplay to true. If it isn’t there, you can add it like this: