Have you ever noticed how, even when you think you're managing your bankroll well, you still end up chasing losses, and instead of recovering, you dig a deeper hole? That's usually a sign that your bankroll management isn't as solid as you thought.
The truth of the fact is that in gambling there is nothing like the perfect bankroll, because inasmuch as you try to manage your bankroll, you will still always stand a chance of running into series of losing streaks, and as such, the next action you take is what matters most, rather than chasing for loses, because as a gambler who intends to manage his/her bankroll while gambling should always have a plan on how much he intends to wager either daily or at every gambling session. While secondly, it is also advisable such individual only deposit an amount they are willing to gamble away at each session or daily. Because inasmuch as you experience a series of losing streaks, you might be tempted to want to chase lose.
Nobody needs a perfect bankroll, you just need to stick to a bankroll that you create. The problem isn't the bankroll itself, but the person that decides to ignore it and create even bigger loses.