Instalace macOS High Sierra will not be deleted

So I'm missing a bit of room on my mac and in the system information (appears when I click on "manage" in "storage" of "about this mac"), I saw that "Instalace macOS High Sierra "was taking 5.21 GB I thought deleting it would solve my storage problem for now. I had it because I recently updated my mac to macOS 14, which I love, but this dang file will not go away. I click on it, then delete. Then I receive a confirmation, "Are you sure" and others. After clicking on "delete", I enter my password to obtain an authorization because it is an "application change". Then the top tab goes away and nothing happens. I've thought about this process dozens of times and I do not know why nothing happens. Help me, please.

thank you,
Matthew