Build Landing Page for ads that do not show up on Website

Hi, We published our new website yesterday (yay!) and now I want to build a dedicated landing page where people that click on a Meta or Google ad are redirected to. I don’t want the landing page to appear on our website and to be standalone page. Can I add this into the website project itself (if yes, how?) or do I need to create a whole new site (if yes, can I export the layout of our website so it looks like our website?)
I am not that technical and would appreciate any tips. Also let me know if my question does not make sense :slight_smile:
Thanks a lot!