The top bar appearance should only be controlled by:
Gnome Tweaks > Appearance > Themes > Shell
which isn't set or accessible in your screenshot... but maybe that's just because I asked you to uninstall 'gnome-shell-extensions'.
Please try reinstalling 'gnome-shell-extensions' and then reopen Gnome Tweaks and set:
Gnome Tweaks > Appearance > Themes > Shell = nothing or Yaru
The top bar appearance should only be controlled by:
Gnome Tweaks > Appearance > Themes > Shell
which isn't set or accessible in your screenshot... but maybe that's just because I asked you to uninstall 'gnome- shell-extension s'.
Please try reinstalling 'gnome- shell-extension s' and then reopen Gnome Tweaks and set:
Gnome Tweaks > Appearance > Themes > Shell = nothing or Yaru