Don’t be lazy dig out the post set a new one in its place, if there is concrete I use a demolition breaker to break it up then remove concrete add a new steel post. Followed by concrete, dome the concrete to shed water away from the post

Dig out the post set a new one in its place. If there is concrete I use a demolition breaker to break it up, then remove concrete and add a new steel post followed by concrete. Dome the concrete to shed water away from the post.