I believe that if we're playing a game with a house edge, where winning depends purely on luck, then bankroll management doesn’t really matter.
What you deposit is already intended for gambling, so whether you go all-in or divide it into smaller bets, the reality is that bankroll management won’t change the odds. It just adds an extra layer of stress in making decisions that, in the end, won’t really affect the outcome of a luck-based game.
I disagree, in every game where funds are at hand, bankroll management matters. With bankroll management, we can last longer in the game since we carefully choose the amount we bet on each round. Aside from that with proper bankroll management, we can make our fund last for another session. In short, bankroll management enables us to play responsibly and we all know responsible gambling is the best way to avoid getting broke or ending up in financial ruin.