Job hunter finding it difficult to generate leads

DEAR HARRIETTE: I quit my job just four months after starting because it wasn’t what I expected, and now I’m struggling more than I ever imagined to find a new one. I honestly thought I had built enough connections in my industry to help me land a position quickly, but everyone has gone silent. I’m updating my resume constantly, applying to jobs every day and reaching out to old contacts, but nothing is moving. I’m starting to worry that the short stint on my resume is hurting me and that I made a huge mistake by leaving before securing something else. I feel like people in my network are judging me for quitting so soon, even if they don’t say it outright.