Hey.
I staked on sports, mainly tennis and volleyball, less often football and hockey. I will not say that I constantly received a good profit, about 300-400 dollars in profit per month. On betting, you must constantly monitor all events, to follow the news, to see the game of many athletes, to monitor their physical condition and current injuries.
If you miss a few months, you need to recover for a few months or a year.
If you play poker and have reached a certain level that will allow you to make a profit at a distance, you will not lose your qualifications. Recovery will not take more than 2 weeks.
At the moment, my choice is poker.