The top results based on the latest update are Head Goal: Soccer Online [Score: 92.3], Ball 3D [Score: 78.6] and Rocket League® [Score: 62.6].
The top rated games you can find here are Rocket League® [SteamPeek Rating: 11.6] ranked #3, EA SPORTS™ FIFA 21 [SteamPeek Rating: 7.8] ranked #15 and Mitos.is: The Game [SteamPeek Rating: 7.6] ranked #16.
Also don't forget to check the newest releases World of Soccer RELOADED [Release date: 2020-10-28] ranked #8, Circle of Sumo: Online Rumble! [Release date: 2020-10-17] ranked #12 and EA SPORTS™ FIFA 21 [Release date: 2020-10-08] ranked #15.
While it is tempting to play with the newest and the best, there might be some other gems in the results, like Circle of Sumo: Online Rumble! [SteamPeek Rating: 6.3] ranked #12, Worm.is: The Game [SteamPeek Rating: 6.8] ranked #13 and EA SPORTS™ FIFA 21 [SteamPeek Rating: 7.8] ranked #15.