How much Google controls the software experience and locks it down.
Currently I wish I could run a local HTML/CSS/JS App on my browser (like you can easily do in any desktop OS) but I can't.
UPDATE: I found a way!! I have to run a local HTTP server on my phone using an app like "Simple HTTP server", put my HTML/CSS/JS into a folder targeted by the server, and then go to http://127.0.0.1:8080/ in Chrome (it doesn't work in Firefox for some reason).
Thank you, I'll look into this! Unfortunately, since my phone is Android 13, it doesn't look like Termux would function properly, and the rest of the answers are very old and seem to require lots and lots of setup. What is the easiest way?