Lonely1 okay this is 100% my field (cyclist and handtherapist)
Which fingers tend to go numb? Is your thumb, index and middle finger -> median nerve compression.
Is it your pinky and ringfinger -> ulnar nerve compression.
Padding as stated does a lot for these types of compression. They actually add pressure in the wrong places causing poor circulation for the involved nerves.
Besides that the angle at which you're gripping your bars is very important.
You want to be holding your bars with your wrists in as neutral a position.
That means not flexed too far backwards or at an angle. You should be able to draw an imaginary straight line from the knuckle of your middle finger to your lower arm.
Besides that shifting position every so often is important.
If you're unsure how to get your hands to fit to your bars to make all that work, this video does a good job of explaining it: