YouTube channel Promotion

I am looking to promote my YouTube channel and increase engagement with my target audience: middle-aged adults. My channel focuses on entertaining content, so I want a campaign that can reach this audience and generate interest in what I'm offering. I am willing to invest up to 1000 INR (Indian Rupees) for this project and am looking for highly creative ideas to ensure that my YouTube channel reach as many viewers as possible. Thank you for your help!