How do you get in on Fall Guys?

I downloaded Fall Guys on my PS4 yesterday and when the download was just finished and I wanted to go into the game, the following photo is displayed all the time. I don't have a Ps Pro, that's why I bought the game yesterday for 19.99 euro and now I suddenly need Ps Pro too. I would appreciate an explanation.

You need PS plus (not PS pro) to play games online, except those that are free

You can play it online without PS plus and since Fall Guys is online you need PS plus

Ok thanks, I also made a prescription with the Ps Pro.