You can earn a lot with the bitcoin itself, I have no doubts about that if I"m honest but you will need luck on your side to succeed with it.
So its possible and there is a chance you will win a lot and this can be 50k if you have real luck or even more but you should of course not be dependable on that because most of the times that is just a dream.
Yeah, winning in gambling is unreliable because it is based on luck. If you just YOLO once in a while, maybe there is a chance you hit big time. That will be instant big profit. But if you want it to be a steady source of income for daily expenses, that will be really hard and almost just a fantasy.