I tried to move my WordPress files, now my site is broken

Hi there

I uploaded WordPress to my one.com website. I had it working fine, but I had it at https://www.website.com/wordpress when I wanted it to be at https://www.website.com. So, like an idiot, I thought that I could just move all of the files from the /wordpress folder and put them in the main directory, but this didn’t work and completely ruined everything.

I attempted to delete everything from the files on my site and upload again and start fresh, but it didn’t work.

This is my site:

https://www.lightbulbgames.co.uk

It seems to have kept the things that I had added before deleting everything, which I think is weird?

I don’t know what I can do, even after deleting everything and trying again I could not fix this?

I can’t even log in now to edit the site as it won’t let me.

Thanks in advance for any help