Absolutely this. You can use that space by having a generous footer with all your contact links and such.

Yeah, good point. It's kinda common to have a big footer.

Examples: https://getbootstrap.com/, https://discord.com/, https://tailwindcss.com/

That way on desktop you could get away with a 50vh margin under the content and then another 50vh for the footer. That's free overscroll.