You think slots are country exclusive? When it’s night time for you it’s not night time for some of the world. And slots do not work based on the amount of players.. That would imply the result is predetermined.. You know how each slot spin has an unique ID? (some games show this when you spin)..if your following spin is last ID+1 then sure, there’s probably less players at that moment, but that doesn’t mean anything. It would only mean something if the result was predetermined for that ID before you even spun the slot. The result of the spin is decided the moment you press the spin button so it is completely irrelevant how many players there are.
You’ve just been lucky and had few big wins “late” so from that pure coincidence you’re making conclusions that aren’t true.