Kylo's plan was to kill (or at least incapacitate) Rey. His thought seems to have been that a low-level attack across the sand would allow him the element of surprise and would cause Rey great anxiety. This would make her an easy target for him on a second run, assuming she somehow survived the ion-wake his ship was causing on the desert floor.
He was mightily surprised when she somehow managed to do a Force jump over the ship, and doubly so when she coordinated this with a lightsaber swing.
Kylo Ren sensed her before he saw her. As he flew his TIE whisper
along the flat desert, she was a bright presence in his mind,
practically glowing with determination and ferocity. Something odd
pulled at his chest. It was the same feeling he’d had when he’d faced
his father for the last time, when he’d made the decision to kill Han
Solo. You had to kill the past, yes, but you had to kill the light,
too, to fully claim the darkness.
He finally understood. Han Solo was his past. But Rey was his light.
That’s why Kylo was still in agony. That’s why he couldn’t shake the
memory of his father’s hand against his cheek, of those eyes full of
love and understanding. Kylo hadn’t yet destroyed his light.
Maybe the Emperor was right. She needed to die. That, or he needed to
kill the light in her.
And there she stood, barely a dot against the ocher sand, her
shoulders squared, facing him down. The girl was terrified; he could
sense it like he could sense the sweat dampening his gloves. Yet
despite her terror, she was unwavering, ready and waiting.
She should be mindless with fear. She should be cowering. She should
have turned to the dark when he gave her the chance. How could she
resist? How dared she?
Rage turned his vision red. He didn’t care about the Emperor. He
didn’t care about the Star Destroyer fleet. He just wanted his pain to
end.
If Rey wanted to survive what came next, she would have to manifest
more power than she ever had before. Show him who she was.
Rise of Skywalker: Official Novelisation
