Okay you can’t help the dice. Just because the dice don’t come up your way doesn’t mean you are doing it wrong.
I think though that you are doing it wrong. :-)
One of the order cards will tell you to select patrol zones for your planes. Now when German units move either from the re-inforcement chart to a zone with planes or from a zone on the board to a zone with planes each plane will roll one die per unit moving. You should move and roll one unit at a time because it is in a way targeted. Move a unit to a zone with a plane or planes roll one die for each plane and determine whether the unit is killed. Then move on to the next unit.
Now if you have planes in a zone that a unit is leaving the unit will get shot at when it leaves. If the unit makes it thru that set of dice the unit will be shot at again if it enters a zone with planes. That is why aircraft only hit on 1’s and why you are limited to four planes (fighter planes) per zone.
Your planes only get to shoot at units that are moving. The 3 infantry and 2 tanks in your example are only shot at by planes if they try to leave the zone.
Hope that helps. :-)