How to make CharacterBody2D bounce off other CharacterBody2Ds?

Make sure to paste scripts instead of screen shots.

Character bodies should make use of their velocity propertiy with either move_and_collide or move_and_slide. In your case I suppose move_and_collide would be better.

First, do not edit position directly. calculate your movement vector then apply it.

func _physics_process(delta: float) -> void:
	var move_vector: Vector2 = position.direction_to(player.position) * speed
	var collision = move_and_collide(move_vector * delta)

	if collision:
		pass # do a bounce?!

Now using velocity you can modify it over time to result in more fluid movement

extends CharacterBody2D

const ACCELERATION = 12 # speed * 4
@export var player: CharacterBody2D

func _physics_process(delta: float) -> void:
	var move_vector: Vector2 = position.direction_to(player.position) * speed
	velocity = velocity.move_toward(move_vector, ACCELERATION * delta)
	var collision := move_and_collide(velocity * delta)

	if collision:
		velocity *= -1 # negative flip bounce
		velocity = velocity.bounce(collision.get_normal()) # normal-based bounce