It is a mistake to only focus on your close friends during a job search. It is important to connect with everyone and even reconnect with those weaker relationships.
Adam Braun says,
"So next time you’re in a jam or perhaps looking for your next job, recognize that the true power is in connecting with your weak and dormant ties. Although our gut tells us, “I let that friendship go for a reason,” the science says you should reach back out and reconnect."