> I have to use a third-party library called react-hook-form to build forms

Regular form elements work just fine in React, all you need to do is interrupt the onInput and onSubmit handler and deal with the form data yourself. I've tried a handful of these form libraries and frankly they make everything way more complicated and painful than it needs to be.

That is fine as long as your forms are simple text inputs and buttons. Now plug in drag-and-drop and multiple file uploads and selects and checkboxes and radios and more of these various inputs you're in the world of pain.

I've recently, once again, gave native inputs a chance in a new project. It lasted as long as I've described in the first sentence. And I've been in the frontend world for 20 years. Trust me, you don't want complicated native forms.

And react-hook-form is just what you need (albeit it also is boilerplate-ish, so I always end up wrapping it up in a simpler and smarter hook and component).

edit: Same, in a sense, for HTMX. It's ok for simple things. But eventually you may end up trying to build a house with a fork. The fork in itself is not a bad tool, sure. But you also don't need a concrete mixer with your morning toast.