Although it is true that, on average, the more bets you make the higher the probability of hitting a really long losing streak and lose it all, the phrase "don't make a lot of bets" does not make sense if the time period and your goal are not specified. I would even say that if your goal is the same, say it's hitting 99.99 and win with 9900x payout, in a dice game, the time period doesn't matter, because making 20k bets within 3 days instead of within 3 hours doesn't change a thing in regards to probability if winning/losing. So, it's your goal is what matters the most.

I mean, for 1.1x payout 20k bets is definitely a lot, but it's a normal thing for 9900x payout.