Even skilled gardeners have bad years. I had no jalapeño peppers to can in 2013. That's after canning over 20 pints in 2012.
/johnny
Not only that, but some seeds do not last as long. Any of the onion (allium) family lasts two years or so.
I’m in Southern Alabama, so I plant a winter garden. Well this winter was so cold, only a few cabbages and my collards survived. Generally I plant a lot of cabbage in the Fall and I get a big harvest around this time of year. Well I may get 3-4 of them. And I am an experienced gardener.
So some years you might not do so well.
You can germinate test your seeds. See here on how to do so:
https://www.youtube.com/watch?v=2vNR3vuvKXw