1) Please go to customizer -> Page Settings -> Sidebar and select no sidebar( 3rd image ) from there.
2) Now go to your package listing page( Or create a new page and select page template as all package listing ) and select layout as Left or Right sidebar to appear the sidebar only for this page.
Let us know if this helps or need more help please do reply.
I would like to ask you a favor Jun891016. Would you mind taking a few minutes to write a review for me, please? Your comments help others know what to expect when they’re looking for the theme we offer.
Link to rate our theme: https://wordpress.org/support/theme/courtyard/reviews/
Thanks for using our theme Jun891016. I’m looking forward to reading your comments.