Also check out Vercel. It's free to open a hobby account, quite easy to install the command line tool (it just requires Node.js) and use that to publish (and later update) exported HTML5 games made with Construct:
1. Extract the exported ZIP file to an empty directory
2. Open up a command line and go to that directory
3. Execute vercel
to upload the first version (it will ask a couple of questions) or vercel --prod
to update an existing one
You'll get a public URL in seconds. You can also copy the .c3p files to the same directory and upload them along with the exported game.