You may have to deposit a certain amount of money first, but playing on such platforms does not mean that winnings are paid to a debit card.
If this is the setup where the only flow of money is going to the owner of the platform and no way that I can cash-out the winnings then I would rather engage in a real casino gambling. This kind of setup is only a waste of money. Why is there a need to deposit real money when we can only play with virtual money and no means of cashing them out? I believe this is just a money grab.
If there is no cash out then there should be no need to cash in money just to play the so called games. Besides just like what other stated, if the goal is just to socialize then, there are lots of social platform out there that offers game so that friends can play together without the need to spend money.