For many, the issue of the requirement is really annoying, because this shows that it is not a gift, it is an opportunity, and if 30 times is at most, but it is an opportunity, it is not something that is being given like other sites, where Gifts often attract problems, sometimes with multi-accounts, which sometimes abuse the system, I think that with the Wager x30 multi-accounts are obsolete, and I think that the bots here have no cavity.
Yeah it looks like fooling people , they will let you win but need to deposit first and spin 30X

This is a clear idea on how to lure players and let them win from bonus given spin but when they will play in actual with their deposit? surely you will lose and will also lose the wins from bonus bets

First of all it is not 30x spin, but it is 30x wagering requirement from the bonus amount. Secondly there is no something "sure" in gambling, how can you say it is sure that you will lose with the deposit? Are you accusing the casino that the bonus is designed to give a guaranteed win and once a user make a deposit then it is a guaranteed lose?
Lastly, it is very common practice in this gambling industry. If you feel that it looks like fooling people, means that these people are not familiar with such bonus or maybe people who do not want to read the whole terms about the bonus in advance before taking the bonus.