Jamestown was settled by a bunch of middle class city folk that had no idea how to handle a wilderness. They were woefully unprepared for what awaited them.
The settlers at Jamestown were more middle class adventurers than actual settlers. They expected to stride out into the forests and stumble upon gold, silver and jewels. They didn’t have a clue about what it took to survive away from civilization.
Word was sent back to England that clerks, adventurers and ne’er do wells the colony had an abundance of. What was needed was successful farmers, craftsmen and tradesmen. The next trip to Jamestown consisted of mainly Polish farmers and craftsmen. With their arrival the colony began to prosper.