Does the end justify the means, and is the resulting money lawful if the purpose of opening a cafe that contains unlawful things is to change young people and reduce existing corruption, with the intention of gradually removing these unlawful things?

"The path of forbidden good does not hit its target. In Sharia, the end does not justify forbidden means. Allah is good and accepts only what is good. Your statement that this act is for the purpose of Dawah does not justify it, for it is not permissible to use forbidden means in calling to Allah. Rather, one must adopt lawful and more beneficial means. If opening cafes means they are places of depravity and pandering, then they are forbidden in themselves and due to the corruption that results from them. They increase existing evil and assist its perpetrators. What is earned from them is forbidden and impure. In the Hadith, 'No flesh nourished by unlawful earnings will enter Paradise,' narrated by Ahmad. Consuming unlawful earnings is one of the reasons why prayers are not answered."