You do not have enough space available on your PS4

I can’t download texture packs or mash-up packs without getting the not enough space error I don’t really want to uninstall and reinstall Minecraft because I’m afraid of losing my worlds.

I know I can backup my Minecraft worlds but I don’t really know how the whole process works plus I don’t really want to risk losing my worlds from doing all this work.

I was wondering is there another way to fix this?