No forms fillable option on Acrobat Adobe Premium

I downloaded the Adobe Acrobat app to my Chromebook. I have an existing PDF I want to add to free form text fields to and continue to reuse. However, I don't see this option in the app. I only see the option to edit the PDF and add text. Is there a reason why I'm not seeing all the available features? I read that Adobe Acrobat Pro DC may be what I need but I don't see in the app store. Not to mention I'm new to Chromebook and would love to go back to a normal PC.