OS windows 11

Hi,

So I was trying to extend my C drive, and I couldn't do it, so I just used a software called EaseUS. So when I was using the software, I took some of the storage from the d drive and put it in my c drive, and after it finished I logged in, and I saw a Z drive that wasn't there When I click on this system Z drive it says I cannot have access to this folder or drive and that annoyed me and then I tried to delete it but I couldn't and I used a software called Unlocker to delete it and it said that it can't delete it but it will be deleted when the computer restarts so I restarted it and then I knew that I messed up and I that partition was a system partition and I'm stuck at this screen