It all depends on your strategy, if you have one, of course. The strategy itself will tell you what is better for it: to make many more random bets or to focus on one sports match, but analyze it well, or in other words, what to focus on - quality or quantity. I traditionally focus on quality, even if at the moment it seems to me that this is not justified and there is no benefit from a thorough analysis of the game. Perhaps, by carefully analyzing games, you will eventually come across some unique advantage of yours that will give you a long series of wins. In general, I would say that a thorough study of something is always more useful than a superficial interest in things. I always apply this principle in life.