No, because underground gambling has no regulations and you will get scammed 100% of the time. And maybe worse, robbed or kidnapped.
Underground gambling is glorified in movies and shows but the reality is you are surrounding yourself with shady figures who are trying to get your money from you while making it look like you are indulging yourself in regular gambling activities.
It is best to stick to regulated, legal casinos.
The cops could raid at any moment, mobs certainly gaslight people and look for a way out. All that fast actions causes anxiety. I've never gone there but I intuitively see it like in the movie. A place for tough guys that wouldn't hesitate, at the slighest promo, to ignite chaos. However, the tension is always high and losses is mostly high too at that state of mind. The brain feels better when we are safe, suspecting trouble in a session drops down the right senses of gambling by alot.
Underground gambling is not for gentlemen, they wouldn't fit into such a place because if anything happens to them they're on their own. I wouldn't go near where they gamble underground because if anything happens to me the first question that the people who knows me will ask is what I was looking for in a place like that. From the name underground gambling it sounds like underworld gathering and we know that people of the underworld are criminals. None criminals that visits underground gambling must be gamblers that are looking for extraordinary thrills, to feel danger upon risking their money.