The best place to host your frontend application is Vercel.
It's free, fast, and easy to take your local frontend project and deploy it publicly.
It has tight integrations with seemingly every popular frontend framework, making deploys require almost no configuration by default.
It has all the features you should expect from a modern frontend host: tight integration with GitHub, ability to preview deploys on branches in development, and automatically scales and caches your app globally.
Additionally Vercel contributes and invests heavily in the frontend ecosystem. They're the creators and maintainers of Next.js, recently hired the author of Svelte, and welcomed a former core React team-member to their team.
Also great: Netlify
Netlify does just about everything that Vercel does (and vice versa). Netlify may do things slightly differently then Vercel, but the end result is almost the same.
There really isn't a distinct advantage to using Vercel or Netlify. They're truly both great.
The main reason Vercel is our top pick is due to what seems like a heavier investment in the frontend community. So at that point the choice becomes more subjective than it does objective.
Budget pick: GitHub Pages
Assuming you use GitHub to host your code, then GitHub Pages is a very quick and easy way to throw up some simple HTML onto the public internet.
Arguable harder to use than Vercel or Netlify, especially when it comes to frontend apps (React, Svelte, Vue, etc), if all you need is to host a simple blog or web page then GitHub Pages is more than adequate.
Just don't expect anything fancy along the way. GitHub Pages is as barebones as you can get.