I'm developing an encyclopedia-type site, of sorts. Essentially the site contains pages for words, definitions, concepts, and blog posts, and I intend to add a new page/post every week or so. I currently have about 40 HTML pages for each post. Previously I had been publishing a repository of the site to Github Pages, but recently I made the decision to host my website through Netlify. So far, I've enjoyed Netlify's features and it has improved my development process pretty well.
However, my website remains static. To be clear, I haven't created the site's files with a static site generator such as Next.js or Jekyll. I wanted the project to be a practice for hard-coding. The only files in the directory currently are HTML, CSS, and JS files (along with git attributes and things like icons and fonts) I've looked through Netlify's web applications and functions sections, however, nothing that I've found really hits the mark, whether it's because I'm a new user to Netlify, or because I don't necessarily have much experience in site indexing and/or back-end applications.
My question is, how can I implement a search bar and a title search functionality to the homepage of my static site? This would be for the process of viewers to easily find any specific post of mine once visiting. I would want the search bar to ONLY search the title of each html file (at least for now) in a designated folder I have for posts. Additional questions would be which, if any, web apps should I use to accomplish this, and should I consider changing the process of which I develop and host the site to accommodate for these?