Slot machines advertise RTP (return-to-player) — say, 92%. This means: over millions of spins, the machine pays back 92% of money played. The other 8% is the house edge.
For your ₱100 bet, expected loss is ₱8 — every single spin. Over 10,000 spins (a few hours of casual play), you've put through ₱1,000,000 of action and lost ₱80,000 in expectation.
The wins along the way are real. They're just smaller than the total ground out. Variance creates emotional highs; the math creates the inevitable bottom.