I never play those heavy favorites , Unless its Amanda Nunes vs Paige Van zan or something. And most of my picks aren't at random, I spend 4 - 8 hours of research and stat collection to pick a winner and go by probability. And yes i have won before on draftkings, I'm up at least 30K in mma betting. I don't care that much about losses, I get better with each event and upgrade my data sheets with new information, I base decisions on a number of factors like methods, opponent ratings , experience, and training camps.
When you play methodical and smart eventually it pays off.