Can't delete jpg files on desktopppp :(

I'm not sure if there are threads similar to this issue, but I haven't found one that helped me get rid of this problem.

I have a couple of jpg files on my mac desktop and when I drag them to the trash, I end up having to input my password to delete the file. But afterward, the sound for files deleted plays, but the file is still on my desktop. Also, the trashcan is still empty.

Also, when I try to create a folder it says

The operation could not be completed because you do not have enough access privileges.

which does not make sense since my user is the Administrator. I saw a thread trying to fix this claim, but it says I need to use the terminal and didn't really explain in detail what to type exactly. I'm a super noob with the lingos used. Please helllp~ 😟