I agree with BrewerBrear. Post the recipe, the steps taken, and the bottling process. It could be any number of things that went wrong. Or maybe it just needs more time, but not likely. Drink you mistake, and try again.
Don't add water unless you're looking for Coors or Bud Light. And make sure it's sterilized water.
As for skipping the secondary, I will respectfully add my two cents. First plastic is gas permeable and not suitable for long term storage. Secondary in glass for longer term fermentation. If...
If you don't went to do a wheat beer, try using a British bitter as a base beer. I like adding a tsp of orange peel at 15 minutes and at flame-out. Use some of the exotic fruits at hand. My main advice is go in small increments. I'm not a huge fan of extracts. If you want to add fruit to a...