Object not rotating properly towards Player

You have the position the raycast hit:

ray.get_collision_point()

That position is in global coordinates. Meanwhile the position of the player is not global (it is relative to its parent). Use global_position instead.

Let us do this:

var rope_start := ray.get_collision_point()
var rope_end := global_position

And we can figure out distance and direction:

var rope_length := rope_start.distance_to(rope_end)
var rope_direction := rope.start.direction_to(rope_end)

Define a size for the rope piece. I'll go with this (tweak it if it is wrong):

var rope_piece_length := 25.0 # gap

With that length and the direction we can have a vector that represents the step from once piece to the next:

var rope_piece_step := rope_piece_direction * rope_piece_length

Next figure out how many we need:

var rope_piece_count := int(ceil(rope_length / rope_piece_length))

Then we can iterate and figure out the position of each piece:

for n in rope_piece_count:
    var rope_piece_position := rope_start + rope_piece_step * n

Since you need to connect the pieces, you want to keep track of the prior piece you created to connect to it. In fact, since the first thing you will connect to is what the raycast collided with, we can initialize with that and avoid the first time check:

var rope_parent:Node = $"../ropewa"
var fixed:PhysicsBody2D = ray.get_collider()
for n in rope_segment_count:
    var rope_piece_position := rope_start + rope_piece_step * n
    var rope:PhysicsBody2D = ropePiece.instance()
    rope_parent.add_child(rope)
    rope.global_position = rope_piece_position
    var pin_joint := rope.get_node("PinJoint2D") as PinJoint2D
    pin_joint.node_a = fixed.get_path()
    pin_joint.node_b = rope.get_path()
    fixed = rope

I want to encourage you to compare my code with yours and see that it makes sense.

At the end (after the loop) you want to connect the last piece:

$PinJoint2D.node_b = fixed.get_path()

On the $ syntax

There is no need to do this: $".", because it is the same as self, but with overhead. So instead of $".".position you can write self.position.

In fact, usually you don't need self. If you are accessing one of the built-in properties feel free to simply use its name (e.g. position as opposed to self.position). If you are accessing a custom property that was created with setget, then it depends (using self will trigger the setget, and not using it will bypass it).

Also $".".get_node("PinJoint2D") is equivalent to $"./PinJoint2D"which is equivalent to $"PinJoint2D" which is equivalent to $PinJoint2D which is how I wrote it above.