I know there were a lot of rumors of jobs out West but why didn’t any really go East
Many did. With the factories though, because of the Depression, work wasn't exactly available.
Others had family that were already East. Lots of families came from the East so they were familiar already with it.
Those that were most affected by the Dust Bowl received the land from a free homestead. 340 acres at a time. The poorest of the poor given lots of land.
Couple that with record wheat prices because of government price fixing during WWI and you have the American Dream right off the bat! Every year after that slowly dropped in price but was still good enough. Until one day it wasn't.
They had seen great times and we're waiting for them to come again.
East was known but the West intriguing. California captured the imagination!