If you're on a Mac, Ctrl-A and Ctrl-E will send the cursor to the start/end of the line (respectively), just like in Emacs.
The use of Cmd instead of Ctrl for CUA shortcuts (and the resulting ability to use Emacs-style shortcuts without issue) is one of the few macOS features that I wish would propagate to other operating systems. The only other OS that comes close with this sort of usability is Haiku (which allows configuring either Ctrl or Alt for the CUA modifier, with Alt by default).
The use of Cmd instead of Ctrl for CUA shortcuts (and the resulting ability to use Emacs-style shortcuts without issue) is one of the few macOS features that I wish would propagate to other operating systems. The only other OS that comes close with this sort of usability is Haiku (which allows configuring either Ctrl or Alt for the CUA modifier, with Alt by default).