I have made some series of research on the said topic, but all the same. For the ones I have searched, the bonuses go with the deposit, that means, without deposit, the bonus is locked as well, you have to deposit on the agreed amount to unlock the bonus. Which I have not done that base on lack of fund. But expecting to do that whenever I have cash to unlock the bonus.

Although, I created the thread to Know the reasons why the bonuses can not be used. Because I was thinking that, as I registered for the site, the said advertised bonus will be used without depositing, that made me to sign up to the sites. But ironically the bonuses are not utilized without paying infact there is no free game in my research.