Last year I set a new crop (my first year) of strawberries and the crop was good. However this year crop is poor, some of the berries are getting rotten before ripening and the fruit is small. I left the plants in the bed over the winter and this year I did not lift them from that bed. Also some of the plants did not thrive at all.
Strawberries are always larger and less rot-prone in their first year. and they were probably short of feeding too and may have suffered with greenflies earlier.