How could I query (find) by the "name" attribute in Laravel/PHP?

one text

I'm trying to follow this: Find or Create with Eloquent

and the findOrCreate public function would work perfectly, but even tho I have "getRouteKeyName()" right above the findOrCreate, using Tag::find() will look for the given data as an ID, not as the name.

Should I make a completely new and custom PHP file with a function called findOrCreate, or there's a way I can tell this function to look-up by name and not by id?

public function getRouteKeyName()
    {
        return 'name';
    }
    public static function findOrCreate(array $tags){ <---- contains strings "default", "example", "other"
        return Tag::find($tags[0]); <---- this only accepts IDs, but $tags[0] points to "default", not an ID. Obviously, it should look up the database via the name.
    }

Am I missing something?