Interest in online slots

I've recently become interested in online slots and want to better understand the world before spending significant sums. I'm particularly interested in how to choose a reputable casino to avoid scams, and what strategies or approaches, if any, actually help increase your chances of winning. I'm also interested in learning how experienced players rate new slots—do they focus solely on the theme and graphics or more on RTP and volatility? What are your recommendations for a safe and enjoyable gaming experience?