To make it in sports betting you should put greed aside and see football betting as a business. What matters is what you want at the end of a reasonable period and not what you want to earn right away.
The reason why sport bookies making so much MONEY is because they lead you to put more and more games on ticket. And with every game is some % more chance to lose. That’s why they had - hit biggest odd or prize for longest ticket… or they give you 1.85 odds for 50:50 chance or favourite some games that they know they are tricky…with 1.30–1.40 odd.