Managing our money responsibly is very important when it comes to gambling since our money is what allows us to gamble at all, so we cannot use it irresponsibly.
If you are an average gambler and you do not have a winning strategy then you need to have some kind of limit that when touched it will mean the immediate end of the session, this not only protects your capital but it also demonstrates to you that you have complete control over your gambling and that you are not suffering from any problems related to a gambling compulsion.
What do you mean by winning strategy? There is not any such strategy that we can apply to slots as we only need to be lucky in these bets and outcomes are in front of us.But yes you need to manage your funds properly in betting to avoid any financial problems and continue your bet.
While there is not a winning strategy that you can apply to slots there are in fact a few games which can be beaten by the professionals, with one of them being sports bets.
Even if we reach the point in which casinos could perfectly price the odds of every single sport match around the world people cannot do that, which means that a lot of money could be gambled in favor of a team and then the casino will need to adjust the odds for that team winning in order to encourage people to bet on the opposite team, and as such professional gamblers can take the improved odds and give themselves a small edge this way, it is not easy to do but there are in fact some gamblers out there with a winning strategy on some gambling games.