Most casinos offer a deposit bonus, so I do not think that is a problem at all, the most important thing is to find a reputable casino so you do not get scammed.

I mention this because scammers know that one of the most sought characteristic for many gamblers is a big deposit bonus, so they offer a huge amount of money as a deposit bonus and this attracts gamblers, however they can offer so much money because they do not have the intention of ever paying you back any money you win, so do not decide on which casino to use just based on that information, or sooner or later you will get scammed.