Something that is haram is haram. Nothing can change it. And those who already know that it is haram will not approach it. But until now, many people still gamble, and they have their own reasons. We cannot prevent them from continuing to gamble even though it is clear in religion that gambling is haram or prohibited because they do it without coercion.
But for anyone who has sinned, he is still allowed to do good. Those who have committed sins must repent and not repeat sins, even though some still repeat other sins. And no perfect human can be clean from sin, and that is why we humans are required to repent to cleanse the sins we have committed.
True. Haram is Haram. No matter what some Mufti or Alim say. It's not true that Muslims won't approach Haram. There are millions of Muslims earning Haram income and spending them in Haram place as well. Every Muslims does not care about Halal and Haram. Only Practicing Muslims care about Halal and Haram. For example, I am a Muslim and sometimes I gamble as well. Money won from gambling is Haram. yet sometimes I do it. No matter whatever excuse I give, those money are Haram and yet I am doing it. It's a sin in my religion. I always promise myself that I won't repeat these things but I end up doing it. Even though I am doing it, I won't say it's Halal. Because Haram is Haram.
You are absolutely right haram can never be halal, we know that gambling and making money from staking is completely haram in the eyes of Islam. In every religion everyone sees bad deeds as haram, gambling is never halal, if any Huzur or Maulana says it is halal then it is completely wrong. Earnings from gambling are always haram if a person considers it haram then surely it will be a wrong decision for that person. I have also played such gambling many times lost bet win from there, but I will never call this gambling halal, always haram. But I will say that people who consider this gambling as halal can never be a good person because people who don't know about halal and haram can never make good decisions in future. Even if he donates the money he earns from gambling to a good cause, that money is considered haram.