Imagine the biggest number is trying to escape to the right side.
After one complete pass, the biggest unsorted number is guaranteed to be at the right.
Compare neighbours.
🔄 Swap if wrong.
📈 Big numbers move RIGHT.
One pass = travel across the list.
Left side is sorted.
🎯 Pick the next number.
⬅️ Move it LEFT until it fits.
One insertion = one new item added.