There's an in-app web browser, and you can click "download" on most recipes from most websites and it will automatically parse the recipe (you can edit where needed) and save it to your recipes. It works perfectly without intervention from my part virtually all the time.

They also offer a bookmarklet (anyone remember those?), which I remember working well in Safari.

I type them in manually, and bought the desktop version specifically to make this easier. It's painful, but since there's decent data export options, I'll hopefully never have to do it again

These days it's pretty easy on a phone. I take a picture with google lens and copy the text.

Easier is finding the same recipe on their website and importing that directly.