Is it possible to install parquet flooring by gluing it yourself? Or is it better to have a professional do it?

You see, with the notched trowel I thought it was some kind of plastic or metal piece with teeth to spread the adhesive and roughen the surface, like a kitchen scraper

Because I have never heard of these names before (except for cleaner and spacer wedges). For the rest, I have no idea what they look like and what you do with them.

You see, with the tooth spatula I thought it was some kind of plastic or metal part with teeth to spread and roughen the adhesive, like a kitchen scraper

The dental spatula only uses glue