offload unused apps

so i was trying to download some apps i wanted, and i have very little apps. so i looked at my storage (because it said it was full) and all my deleted apps are taking up storage. i tried to delete them and offload them but they didn’t work. i did try restarting my phone but that doesn’t work. i also turned on offload unused apps but it still wont work? i just wanna get the storage and apps off my phone, but i cant. i have tried redownloading them and then deleting them but that wont work either