The reason your skin isn't looking glowy is that basically the top layers of your skin are made up of dead skin cells, which are never going to look very glowy. As we get older and our metabolism slows down the skin cell cycle slows down and dead skin cells accumulate and make our skin look dull and uneven.
You need some 'active' ingredients in your skincare which will penetrate to the deeper layers of skin and actually do something, like exfoliating these layers off and encouraging newer skin cells to the surface.
My glowy skin came from using these active ingredients in my skincare - vitamin c serum, retinol and alpha hydroxy acids (AHAs).
Retinol increases cellular turnover, which basically sloughs off dead skin cells on the surface of your skin allowing the newer skin cells to show. It's one of the best ingredients to use on your skin.
Vitamin C serum brightens and evens the skin, and over time can help with things like pigmentation.
AHAs are liquid exfoliants which also help to remove dead skin cells by dissolving the 'glue' that holds these dead skin cells together. If you have oily skin try a BHA instead.
All of them can be a bit irritating to use at first, so I would introduce them slowly be patient as it can take some time to see good results.
Also, do you use any sunscreen? If not then you should, especially if you are going to use active ingredients, as you need to protect your skin from sun damage.