If you show genuine humility, making it clear you don’t mind working with others and don’t insist on hierarchy, there is a good chance ageism will not harm your chances. Talk about teams, what current employees have achieved, and how you could foster collaboration.
Start by displaying warmth because that is how you can influence others: a mere smile is enough. Try to find ways to connect personally with your interviewer. You might make references to popular shows or use humour. But don’t use self-deprecating humour such as "that was before the internet": this might make people feel uncomfortable.
-jk-