I participated in dozens of different draws of Roobet. All with a minimum of 200-1000 tickets. Unfortunately, it didn't happen to me even once 
However, other bonuses are satisfactory, especially for high-level players, there is a VIP manager appointment and direct contact.
That's how lotteries/raffles usually work. Winning them is considered a miracle basically since your odds of winning them are extremely close to 0 thanks to the humungous house edge and competition. However, other bonuses are satisfactory, especially for high-level players, there is a VIP manager appointment and direct contact.This is why you should always participate in them primarily for the sake of fun and entertainment(Not for earning money).