For me, I feel like it’s a waste of time. Based on my experience, I usually lose because I get carried away by emotions while watching the game. And sometimes, what we expect to happen just doesn’t happen.
Like in a recent basketball game I bet on, the best player of one team had 5 fouls by the end of the 3rd quarter, meaning he’d have limited minutes in the 4th. So, I quickly bet on the other team that wasn’t in foul trouble (which was also the pre-game favorite).
But in the end? I still lost.

You should be really familiar with the sports and the teams if you want to bet on live bet.
When you really understand about the sports and the teams, you will know like which teams tend to comeback and which teams tend to make mistakes in the last minutes. So, if the team that like to comeback is currently behind the opponent, you should bet on them instead of the opponent.
It's risky, but experience usually not go wrong.