The sites I use for information on CSGO players and teams would be Liquidpedia which also does other games and theres HLTV also which lists every match and its full details every day.   HLTV is great for showing prior match history, the player stats.   The forums arent much good but they do alot of articles and interviews.    So far as esports bets on the games, tournaments, pm me and I'll pass your name along to someone who can refer you to a good site who did the same for me and they handle big or small bets and live bets and all sorts which is useful.