"Light-hearted and humorous" might be replaced with "playful and amusing," "cheerful and witty," "humor-infused and lighthearted."
Replace "cultural and social flavor" with cultural and community essence "providing a glimpse" → offering insight "lives" → life circumstances "experiences" → personal interactions
"Content catered to specific ethnic and cultural groups" could be "materials tailored for distinct cultural and ethnic communities," "information designed for particular heritage and ethnic audiences," "media targeted to specific cultural and national backgrounds."