If your brand speaks for youth and your content is targeting the older people, it won’t work. Focus on audience research and explore your competitors, always keep yourself updated with market news and social media trends.
In long term, your way of storytelling and your content will help build your brand. A brand should stick to one theme along its purpose which helps in its online presence and easy SEO. Brand memories, brand recall and connections grow gradually, it’s not an overnight success but a matter of respect and legacy.