Error 404 when in admin console

Hi,

I have just started using wordpress. After installation I was in wp admin and wanted to start making changes. I went to Settings to see why the website address was dispalying traveladdict.eu/wordpress/ instead of just traveladdict.eu for the homepage. I have deleted the /wordpress/ part but now it doesn’t let me go into the admin panel anymore, just redirects to my host (000webhost) with error 404.
I try to go to traveladdict.eu/wp-admin, also doesn’t work.

Anyone can help how to fix it? I did some html, but have not worked with php before.

Thanks!