There are luck-based games and skill-based games but it doesnt o guarantee that if you are a master of that game you will win easily. It is still about luck as even those professional gamblers still lose but they just know how to control their emotions.
In gambling, defeat is certain because we lose more than we win. As you said, even professional gamblers will still lose, and the most important thing is financial and emotional control. Don't be tempted to keep making deposits as that will only waste more money. It's better to stop and start playing tomorrow or next week
Having fun should be the main reason why we gamble but the problem right now is that they are going to use it as a source of income which is why they are chasing losses so that they can earn money on that day and also which also leads to more time spent gambling and lead to addiction.
People who like to chase losses and hope that their money will be returned by continuously depositing are characteristics of gambling addiction. It's better if we forget about the money we have spent on gambling. Don't waste too much time at the casino because it is not good for mental stability and will interfere with our work