It does not matter how many bets you want to do, that can not influence your winning chance, in some days there might be big number of matches which deserve to bet on, like yesterday, there were very important matches in one day, Man United Vs Arsenal, Dortmund Vs Bayern, Atletico Vs Real Madrid, I bet on all these matches, and in other days you might not make any bet. sometimes many matches a day give you a chance to compensate your losses if you lost in one match, or you can make a parley.
in fact number of bets do not matter the size of bet matter a lot. the wise people always study and evaluate the situation and specially in sports gambling where you can use your experience skill and knowledge, so if a you feel that its the right time for betting then you can put a high bet but if you feel that conditions are not in your own favour then you even stop betting or can limit your betting to a little amount.