Comparing the odds gives you another interesting option - a sure bet called also an arbitrage bet. If you know exactly what this definition means and you need no additional information about sure bets you will probably would like to look at free sure bets list.
And briefly: playing sure bets is probably the only way to get a real chance to win against bookmakers.

Sure Bets Finder:   All - Today - Tomorrow - Next 3 Hours - Next 12 Hours - Top

Série A
2018-07-19 00:45:00	1	X	2	Pr %
Gremio - Atletico-MG	2.24	3.65	5.30	9.09

Copa Argentina
2018-07-16 19:00:00	1	X	2	Pr %
Agropecuario - Club Lujan	2.00	3.90	6.50	8.97

Pepsideild
2018-07-16 19:15:00	1	X	2	Pr %
Fylkir - KR Reykjavik	3.33	3.88	2.80	8.48

International Champions Cup
2018-07-21 01:00:00	1	X	2	Pr %
Manchester City - Dortmund	2.68	3.76	3.40	6.68

Mls
2018-07-21 23:00:00	1	X	2	Pr %
Philadelphia Union - Los Angeles Galaxy	2.30	4.05	3.70	4.80

Division 1
2018-07-17 14:00:00	1	X	2	Pr %
Zenit Petersburg 2 - FC Tambov	5.31	3.93	1.95	4.44

Superliga
2018-07-16 18:15:00	1	X	2	Pr %
Randers FC - Brondby	6.20	4.50	1.73	3.85

Copa Do Brasil
2018-07-16 23:00:00	1	X	2	Pr %
Cruzeiro - Atletico-PR	1.65	4.20	8.40	3.68

Série A
2018-07-19 22:30:00	1	X	2	Pr %
Cruzeiro - America MG	1.55	4.55	9.73	3.23

Pepsideild
2018-07-16 19:15:00	1	X	2	Pr %
Breidablik - Fjolnir	1.75	4.65	5.50	3.17

The technique also known as sports arbitrage or Sure Bets is a great way to earn without losing sports betting, it all depends on your budget.

Logically, on a limited budget of 100 euros and a SureBets with 3% profit, the gain is relatively low, so you should be able to invest a greater sum of money to see increased investment faster.

We also have a list of the best bookmakers, that having more shares than others, where there are often Sure Bets.

So, having said that, needless to say good luck, since it is no longer to win a bet, but you will start to talk about a real job.