My strawberry plants developed fungus!

Last spring i planted several strawberry plants in new miracle grow soil. They were thriving - absolutely beautiful big plants. I added a couple of new plants for variety. Within two weeks my plants quit thriving and i noticed a fungus had developed on both older and new plants. I treated everything with a fungicide but in the end all my strawberries died. I want to replant now but don't know if i can handle the heartache :-) I've treated the soil with more fungicide. Any suggestions. The planter is in a very sunny location with excellent drainage. Any advice is welcomed i dont have a green thumb.