What is the way to invite one's family to Islam, and is it permissible to abandon them due to the inability to openly practice Islamic rituals, and is it correct to denounce their evil deeds before correcting their creed, and what is the advice regarding marrying a Sunni girl?

The questioner is congratulated on his guidance to the madhhab of Ahl al-Sunnah wa al-Jama'ah. He must strive to guide his family and correct their beliefs through sincere advice, enjoining good, and forbidding evil, in accordance with the Almighty's saying: "O you who have believed, protect yourselves and your families from a Fire." This should be done through calm dialogue, prayer, and clarifying the truth with evidence, while bearing in mind that saving oneself takes precedence if one fears for their religion, as in the story of the killer of a hundred souls. As for marriage, the questioner may marry whomever he feels comfortable with, even without his family's knowledge, but it is preferable to convince them out of concern for maintaining kinship ties.