Betting on the tournament winner is a good way to bet on the esport. If you do your research, you can get a good overview of who will win a tournament and the odds are obviously much longer than for an individual game between two teams.
If you wait to watch the first games in the tournament, you can get an even stronger preview of who will perform well and reach late in the tournament. Of course, if you wait a few rounds and your odds will shorten.
The main drawback to betting on a tournament winner is obviously that it gives much slower returns that you have to wait until the end of the tournament. However, most sports tournaments are short-term, from a few days to a week.
The Handicap bet is a variation of the match winner bet that will lengthen the odds of a favorite to increase your returns.
If you bet on a team in a BO3 match with a -1.5 handicap then that team will have to win 2-0 for you to win the bet. In a BO5 match a -2.5 handicap means that the team must win 3-0 for you to win your bet.
These bets are incredibly risky, because in most e-sports, it is entirely plausible that a weaker team wins a round in a game. This means that it is better to avoid these handicap bets unless there is such a chasm in the class between the two playing games.