I never force myself to play with lots of rounds. And usually, if a slot game has a Buy feature, I often buy it even though the results don't always give big wins.
Thanks for your advice. Maybe sometime I will try to play until 700-800 rounds to see the results. And if, before 700 spins are reached, I can get a big win, I will also definitely quit right away.
The only advantage of playing with smaller rounds is that we are betting bigger amounts. Whenever we win, it should give us a decent profit than the playing with longer spin rounds. It's always better to quit once we already won enough money because we might get tempted just lose what we already win.
But that seems to be fine for me too. And if later, before reaching 700 rounds, I can already get a win and even a big one, I will stop immediately. I always play with small bets for up to 100 rounds in one round. And hopefully, I can win again.