there are packages which are repetitive so should i delete them
It depends?
The freedesktop SDK are probably different versions of the same flatpak. You may or may not need them. You can remove unused flatpaks with flatpak uninstall --unused
As for the others, you would need to investigate why you have two first. It could be the same as above, it could be both a flatpak and repo package or something else. Not enough information on that screen to know.
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