@marp68,
Are you talking about within Calibre? If so you need to visit
Preferences - Change calibre behaviour - Tweaks
and look for the 2 items
- Control sorting of titles and series in the library display
- Control formatting of title and series when used in templates
in the 'Edit Tweak' pane, if either of them are set to
'library_order' change to
'strictly_alphabetic'
In both cases you will need to read the 'Help' pane above to fully understand the implications.