Poor wifi range with my MacBook pro

hi

recently my MacBook has been struggling to connect to wifi in various locations

including home. My Ipad and phone are fine. At one location I have to

be within a couple of meters of the hub to connect. I have searched support and

deleted several files as suggested but no joy.

once connected its fine but I keep finding myself using my phone as a repeater

it's really frustrating as I rely on my machine