Slot games is good but I do not prefer only the slot games I prefer those gambling sites which has casino as well as sportsbook. I think you should choice those gambling sites which has slots as well as casino and sportsbook. And if so you will get a lot of gambling site where you would be able to gamble.
Most casinos are not dedicating not only slots games as players want other games to be played with.
Very rare that you can encounter casino with slots games only, usually it is combined with dice, roulette or crash.
And most of the casinos now are also integrating sportsbooks because there are so many sportsbettors also.