Preference doesn't mean that you have to have a different style of bankroll management. Bankroll management means how long you want to play and how much money you have and so forth. Which means that if we end up with something that is not so risky or easy, then we are going to end up with a problem.
A legit casino will do have enough budget to pay their players. It can be issues with small and new casinos when they start. Maybe they did not intend to scam at beginning but with small fund and bad Terms of Service and mechanisms in their games (max win, max payout), if a player luckily to win too big, casino is unable to make payout. Shit happens, scam happens.
It is not what we say about Duelbits that is a legit and trusted casino.
Undoubtedly, sports betting is something where you can apply your skills and have an edge over inexperienced bettors. Of course, luck is still a factor there, but with many bets made its influence diminishes, and therefore it's possible to consistently make money on sports betting. But we should be aware that only a few people are capable of that, maybe one in a thousand. For the rest of us it's a great entertainment, but not something we can live off.
Betting should be a thing for entertainment. While we watch a sport match, we bet and increase our feeling when the club, the player we love win that match. It will be like doubling happiness when a lovely club or player wins. Without a bet, we will be happy but with a won bet, the level of happiness will double.