Yes we sometimes share information and betting strategies but that's about it, because the decision making process ultimately comes down to personal preference. Perhaps because gambling is best suited for solitude, I don't think it matters much whether you share your strategy with friends or not. Based on my experience when placing bets, that information is often ignored opting instead to rely on instinct.
I have gambling friends whom I share information with, I'm in a platform where we as friends share gambling tips among other things. Sharing and comparing tips is fun and we are not obligated to accept what is unanimously agreed, everybody has to decide what they want to bet on. Gambling is not like serious mathematics or serious decision making that lives can depend on so me and my gambling friends can casually discuss about our bets nothing serious. I agree that it's fun to discuss about sports and bets it makes friends with such common interest to bond.