Which free pdf editor in laptop works best for filling out contract forms?

I need to fill out a 10-page contract on my Windows laptop, but my current program messes up the text boxes. What completely free PDF editor handles form filling without adding watermarks?

Honestly, the simplest thing to try first is just opening it in Microsoft Edge. It handles interactive form fields suprisingly well and doesn’t add watermarks. I use it for quick vendor agreements all the time.