Lighting – How to wire a light switch that has 2 switches wired in but should only use 1

I just moved into a new home. The builder left the island lights capped, and I am trying to install them now. There are 3 lights over the island. The first one, for some reason, has the pot lights wired through it as well.

There are 3 sets of black and white wires, plus one red wire in Kitchen light #1.

I have named them:

Set #1 (black, white and red wire)

Set #2

Set #3

The red wire from set # 1 was originally tied off with the black wire from set #2. I hadn't seen this, so I just connected all of the other white wires to the white wire from the light, and the other 2 black wires to the black wire from the light. The result was Kitchen light #1 and pot lights on switch #1. Kitchen lights #2 and #3 on switch #2.

When I connect black and white sets #1 & #3, the pot lights work on Switch #1. The kitchen lights do not.

When I connect black and white sets #1 & #2 into the light, with white wire #3 into the light, and the red wire into black wire #3, the pot lights work on switch 2 and the kitchen light #1 works on switch #1. Kitchen lights #2 do not work at all.

When I connect set #1 into the light with white #3, tie the red wire connected to black #3, and tie off black #2 and white #2 separately, the pot lights work on switch #2 and light #1 works on switch #1.

Can anybody help me identify the problem? I have tried so many variations of the above. I just want the 3 kitchen (island) lights on one switch, and the pot lights on the other.