I had a mental breakdown from losing at Hearthstone so much.
Are you being serious? How did Hearthstone cause your mental breakdown?
From the losing, of course. Hearthstone broken my spirit.
It is easy to get sucked into playing competitive video games such as Hearthstone obsessively as that is how video game companies make their money. However, playing to the point of suffering a mental breakdown indicates that you have a problem and are addicted. You should work with a therapist to get help with your video game addiction.
If you need help then you're weak. You make your own luck.
If you are having negative feelings you need to try different activities that boost your mental health.