I just noticed something I read here in this thread, is it true, which is a 100$ free 100% deposit bonus?
This is confusing since you said $100 free then after that without any punctuation is $100$ Bonus. As if the reader might think of it as $100 + 100$ bonus.
Anyway, if the bonus is 100% without any limit then your deposit no matter how huge it is will be x2, for example, you deposit $100 you get an additional $100 for the bonus thus making your bankroll $200.
If the bonus is $100 for the first deposit, then. no matter how huge your deposit it, your bonus will be only $100. For example, if you deposit is $300 you will get $100 extra from the bonus making your bankroll $400. This kind of bonus probably seldom exists because this kind of bonus isn't attractive.
Another option is, the current promotion of Moonbet as of this writing is the
100$100% bonus up to $50. Meaning you get a 100% bonus until $50 and above that, you still have $50 as a bonus since the bonus amount is capped to $50. And here is the requirement to be able to withdraw the bonus.
Original deposit must be rolled over 15x which must be met in the sportsbook, casino, or eSports betting platforms
source:
https://www.moonbet.io/promotion/detail-promo/welcome-bonus