Images have a weird behavior

I want to make a grid based game and for the grid I am using an image that is instantiate in a grid layout.
But here is how everything should loock like:

but If is not close to the camera is getting very weird:177891-screenshot-25.png

Pls help me what can I do to solve this problem or maybe how can I make a grid for my game.
Maybe i have to change some setings but I didn’t find anything

To use line renderer, as you asked:

var line = gameObject.AddComponent<LineRenderer>();
var start = new Vector2(0, 0);
var end = new Vector2(0, -10);
var points = new Vector3[] {start, end};
line.useWorldSpace = true;
line.startWidth = 0.1f;
line.endWidth = 0.1f;
line.startColor =;
line.endColor =;