People who don’t live in NYC are shocked when they discover how expensive things are here. Salaries in many fields are higher, but not high enough to offset the higher cost of living.
And few employers will recruit from out of the area — why should they, as there are so many good potential employees here. Unless you have really unusual skills in a high demand profession you will probably need to pay your own way to interview here.
There aren’t many inexpensive Jewish neighborhoods in NYC. Try Pelham Parkway or Kingsbridge in the Bronx. The latter is walkable to Riverdale and close to the subway. The former is offering bribes to people to move into the area. So is Mount Vernon, in Westchester county.
Good luck!