Welcome
1. What is your "advanced age" - I missed that somewhere.
2. It is likely that you will need to find new pleasures in bicycling, if your former pleasure was racing. Many racers leave bicycling when they can no longer compete successfully, because that was their reason for bicycling.
Not that you can't or won't compete. It is just that many of us enjoy the opportunity of riding for different reasons - such as "smelling the roses" or commuting or other reasons.