Left and right. To visualize this open the hood and look down at the A arm. Imagine the bottom of the strut moving forward and backward just a small amount. Then look at the A arm front inner bushing. The A arm would be pivoting at this point back and forth parallel to the ground. Now visualize how the rear A arm mount would also have to move side-to-side.

Your problem is definitely not normal. A good alignment or front-end technician should be able to check the joints and alignment to tell what parts to change before bringing it in for an alignment. Or it may just need an alignment.

There is some clearance in the bracket bolt holes. You may be able to move the bracket a very small amount yourself. You only need to break the three bolts loose to be able to move the bracket by taping it with a mallet. The bolts do not need to be backed out at all. You do not want the bracket moving around by itself. Move the bracket outward to increase the caster. If the caster were out of spec the front bushing would not be properly aligned anyway.