Experience at sports or experience at betting?
I am pretty sure that everybody knows that they can't beat the system at sports betting.
The sports betting sites are hiring statistics proffessionals that make sure that people won't win at the long run, they use large house edge to make sure that it happens.
Think about it like that, the house knows almost excatly what are the chances of each team to win, and they will give you much less reward for the profit.
The only thing that is good about sports betting is that you can be sure that it is provably fair and the site is not cheating you, and you are enjoying a higher level of excitement then you could be reaching from dice/ roulette gambling.