Sockel Foto

what do you mean by copy right menu? a copy right info only
the socket itself (Sockel in German) does have allready the option of copyright info. You only need to give it a bit css to make it bigger.
On Enfold styling you can have background-image for Socket too ( you can upload your own there)
and only have to determine a min-height f.e. for the socket.

click on the image to enlarge – ich glaube das ich das Backend auf Deutsch für dich lassen konnte:

and

for my test here i got the following quick css

#socket { min-height: 450px; display: flex }
.socket_color { background-size: cover }
#socket .copyright {
    float: none;
    display: block;
    text-align: center;
    font-size: 48px;
   line-height: 60px;
    top: 60%;
    position: relative;
    color: #f00;
}

See demo here: https://webers-testseite.de/bernhard/