The only thing you can really do is unsubscribe from literally everything, and choose much more boutique groups that are related to your specific interests. For example /r/multicopter/ is a half decent resource for quadcopters and various hobby drones, or /r/destinythegame is a useful resource for a specific video game. The page /r/alaskanmalamute is a friendly community of people who own Malamute dogs.

Everything that has millions of random people joined to it has become a cesspool of lowest common denominator clickbait posts and photos.