Customize Each Letter
As an experienced professional, you probably have a cover letter that you send out to multiple employers when you're searching for new work. But if you're using a one-size-fits-all approach and it's not working, it could be time to change it up. Try to target each letter you write specifically to the job you're applying for. This will let employers know that you're genuinely interested, that you've done your homework, and that you're not just mass-mailing a form letter to everyone in the industry.