Jackson needs to be played the ball on the ground in channels like he was for the offside he isn’t an aerial target man at all.
my biggest issue is that when someone is on the ball everyone is hiding behind an opposing player instead of showing making triangles to pull them out of position. Also we have opportunities to play forward into spaces between the midfield and defenders we play it backwards. When you watch City, Liverpool, Arsenal even you don’t see players hiding behind opposition not looking for the ball.