There are thousands of job boards in the US, and they charge just a few hundred bucks to post a job.
You’ve used them before, so you know what happens. Within a day or two, your email box is overflowing with hundreds of applicants… most of them don’t remotely match your criteria. (Because it’s so darned easy to click the “Apply” button, everyone does.)
When you finally get around to sifting through that email folder of applications, you find just a handful are worth a phone call.
More importantly, you’ve missed the vast majority of targeted people you actually want to reach. Because Job Boards reach people who happen to be searching for a job that particular day. (Even during a global pandemic, only 20% of people are actively seeking a job.)