Search bar in the header

Hi, I wonder if it is possible to put the search bar in the header, in the header options of the customize theme page, i enter some simple html code, i can see the search, but it doesn’t work as intended.

I don’t use a sidebar, so i don’t not other way to have a search bar in my site, i tried the ‘explore page’ in the header menu, but i don’t like it.

Any clues?

Regards