Yes sure because it's gambling you can win or lose with your money.
I have also done this a couple of times and what I did most of the time was betting much money on a good team that was playing a lesser team.
This way you have a bigger chance of winning because the team you put money on is better.
Yes, on doing sports betting we would surely bet on the better team compared to another but we could not guarantee anytime on our bets because there are some scenarios that results would be opposite and thats the essence on making gambling. It may rely also to luck. Indeed betting on sports is also gambling.
The word betting comes with any name it is called gambling. So sports betting also gambling. There is no difference in between these two terms. In sports betting, we invest money to players or teams to double our money. So in a sense, we are putting our money in a risk. Then this is nothing but gambling.