Usually you uninstall software with the same method you used to install.
In my own case I install and remove software with “sudo dnf install” and “sudo dnf remove”.
Of course there are “graphical tools” for searching, installing and removing software, like Gnome-Software. Usually they list already installed software, you select the one you want to remove and then click the “uninstall” button (or something alike).
I would say if you see two icons it means there are two different versions of the same software installed. For example one could be the rpm version and the other the flatpak version.
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but i can’t uninstall Elementary Configuration , etc… not showing installed apps list
I don’t know what “Elementary Configuration” is.
Did you install some desktop enviroments one on top of the other?
In this case you will see the “components” of all the installed desktop environments and to remove those you need to unistall the whole desktop.
Installing different desktops can create a bit of confusion, removing one can remove too much and break the system.
My advice is to NOT remove anything you don’t know exactly why and how is there.
If you really really want a “clean” system, best way is to make backups of all the things you need to save, double check the backups, then delete everything and re-install the system you prefer.
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Is this Pantheon desktop by any chance? How did you install your system?
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You will indeed need to provide information if you want help. With respect to the VLC icon appearing twice, that can happen if it is installed in two different ways. By default on Fedora, you can install it as as an rpm, or as a flatpak from Fedora, or as a flatpak from flathub.
As long as we do not know which desktop environment you use, no more specific help is possible.
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To check, run
rpm -q vlc
flatpak list
With that, it would be possible to remove one of them if so desired.
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