Are you using Webflow's Site Search feature?
Why not make it available on Google Search as a search box for your users as well?
With JSON+LD, you can make it easy for Google to find and to potentially display your Webflow Site Search directly in Google's search results.
I would place this piece of JSON+LD on all pages of the site, so put it in your site-wide custom code, in the HEAD section.
<meta property="og:site_name" content="Sygnal Technology Group">
<meta property="og:type" content="website">
Here's what Sygnal's looks like;
Key fields;
Google's documentation on sitelinks search box
https://support.google.com/webmasters/answer/7445569
https://search.google.com/test/rich-results