Is the money earned by a son working abroad the property of his father and siblings, and does his desire for independence in his life contradict the teachings of Islam, and what are his duties towards his well-off parents and siblings?

The money you acquire is your property, and you may dispose of it as you wish. Your father may take from it for a need, as long as it does not harm you or interfere with your necessities, and he should not take it to give to others. As for your siblings, they have no right to your money except what you willingly give them. The hadith: "You and your wealth belong to your father" does not imply absolute ownership but rather permissibility under certain conditions. Your duty towards your parents is righteousness and benevolence, and towards your siblings, it is maintaining ties of kinship and showing kindness to them.