for sure this is an instruction from my friend at that time
he said when it hit high multi we won't get it again if we play on the same client seed lol

This is a well quoted misconception that gamblers often believe but it is false. The casino does not "remember" your rolls by your client seed or anything. Each roll is independent from another and that is why it is very much possible to hit two 99.99x multipliers right one after another and maybe even another one if you are luck enough.
The key word here is luck and that you cannot predict.
This also leads to the obsessive changing of seeds every few rolls or so - this is a useless exercise that some users do but it has not effect on rolls and neither does it improve the odds. Randomizing a thing that is already random is a waste of time.