I was wondering if there are any groups here that provide daily advice and recommendations on best matches to bet on. Is there any groups like this, where the members help each other to improve their odds of wining the bets?
Well yes, lots of tipster out there if what you're talking about "betting groups" are in fact tipsters who try to predict what bet is the best value for your money, at a certain odd and who is more likely going to win the match.
They are all over the gambling discussion board, I'd recommend Joca.