LF casual group

Going to try this again.......I'm 44 yrs old and have been playing for about 3 months. I just hit level 30 yesterday. I wouldnt consider myself a fantastic player. I've played one ranked game and did terrible. I'm in a small group now but they only have 10 people....so I'm looking for a larger group of people to play / learn with. I hope to improve enough to play more ranked games in the future. My main is Lux but I also like Miss Fortune , Twitch , Teemo , Tristana , and Graves . I'm in CA, so I play on PST. Thanks.