ReactJS Country api

I haven't figured it out yet to limit the data to shown, then add more when scrolling also include the filters, when filter result is more than 10 countries, just show 10 but be able to search other country beyond those 10. what I just did I figured it out to show only 10, but cannot search countries beyond those 10. Finally no light mode yet, I got confuse with the given colors.

Any tips would really appreciated :D