Complex sentence: Plus, because Lu You always felt there was no place for him to use his talent and ambitions to save Song Dynasty, he started to become self-indulgent, enjoying drinking to forget his unsuccess in personal life and career pursuit.
Split into simpler sentences: Plus, because Lu You always felt there was no place for him to use his talent and ambitions to save Song Dynasty. He started to become self-indulgent, drinking to forget his unsuccess in personal life and career pursuit.