Good Morning and welcome to TE. You will find a lot of support and good information here. You aren't too old to be getting back to riding. You're just a sprout!
I bought that very same bike last October, loved it and bought another, a Surly Cross Check with drop handlebars so I'd have more hand positions.
So you say you bought your bike in March and have ridden 5 to 6 rides? We need to get you out more and get some riding under your belt. Just curious, why only 5 or 6 rides in 6 months?