Downloading posts as HTML

So I recently started builduing a tool to download Lemmy posts as raw HTML. I am using bash for this.

I got all of my other code working so far, but the problem is, that when I fetch a command just from the post id, the entire formatting is quite fucked. An example:

Does anyone know how I can fetch the post with curl (or if you have any other CLI programm, that could do this, feel free to recommend them to me), after everything has been loaded, so that in the end I can see the post as I would normally see it through the web interface.