Complex sentence: Nonetheless, Fairouz had several insecurities concerning her physical appearance and after insisting for years, and with Mansour's defense, she had her nose job operation in 1967, which drastically improved her facial features and elevated her breathing.
Split into simpler sentences: Nonetheless, Fairouz had several insecurities concerning her physical appearance. After insisting for a long time, and with Mansour's defense, she had her nose job operation in 1967, which drastically improved her facial features and elevated her breathing.