Ball layer, balls dont collide with each other

Assets/Prefabs/Ball.prefab

@@ -16,7 +16,7 @@ GameObject:
   - component: {fileID: 7041796185663956337}
   - component: {fileID: 7286884547159090166}
   - component: {fileID: 8029731608843643848}
-  m_Layer: 0
+  m_Layer: 3
   m_Name: Ball
   m_TagString: Untagged
   m_Icon: {fileID: 0}
@@ -102,7 +102,6 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 267dfd77302043669cc125190ddfb575, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  rb: {fileID: 0}
 --- !u!114 &8059693774009316043
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -177,7 +176,7 @@ Rigidbody2D:
   m_LinearDrag: 0
   m_AngularDrag: 0.05
   m_GravityScale: 0
-  m_Material: {fileID: 0}
+  m_Material: {fileID: 6200000, guid: 2d231bbc8208f52c797c91aa2030f60f, type: 2}
   m_Interpolate: 0
   m_SleepingMode: 1
   m_CollisionDetection: 1

Assets/Scripts/Game/AIPlayer.cs

@@ -75,6 +75,8 @@ namespace Game {
 			float requiredDistance = Mathf.Abs(futurePosition - X()) - Width / 2;
 			if (requiredDistance < 0)
 				return true;
+			if (Mathf.Abs(futurePosition) > Border)
+				return false;
 			return Speed * seconds > requiredDistance;
 		}
 
@@ -132,7 +134,7 @@ namespace Game {
 			}
 
 			// No intersection -> Ball outside of field -> dont simulate further
-			return origin.x;
+			return IdlePosition;
 		}
 
 		private float GetTargetPosition() {

Assets/Scripts/Game/Ball.cs

@@ -1,26 +1,20 @@
 using System;
 using Unity.Netcode;
 using UnityEngine;
+using Random = UnityEngine.Random;
 
 namespace Game {
 	public class Ball : NetworkBehaviour {
 		public Rigidbody2D Rb { get; private set; }
 
 		private CircleCollider2D Collider { get; set; }
+
 		public float Radius {
 			get => transform.localScale.x * Collider.radius;
 			set => transform.localScale = new Vector3(1, 1, 1) * value * 2;
 		}
 
-		public bool IsAlive {
+		public bool IsAlive { get; private set; } = true;
-			get {
-				float y = transform.position.y;
-				float y1 = BorderSize.Singleton.y1;
-				float y2 = BorderSize.Singleton.y2;
-				return y > y1 && y < y2;
-			}
-		}
-
 		private void OnEnable() {
 			Rb = GetComponent<Rigidbody2D>();
 			Collider = GetComponent<CircleCollider2D>();
@@ -28,11 +22,14 @@ namespace Game {
 
 		private void Start() {
 			Rb.velocity = new Vector2(0, 25);
-			Rb.position = new Vector2(1, 0);
+			Rb.position = new Vector2(Random.Range(-2, 2), 0);
 		}
 
 		private void FixedUpdate() {
-			
+			//TODO remove this and use triggers for death zone
+			if (Rb.position.y > BorderSize.Singleton.y2 || Rb.position.y < BorderSize.Singleton.y1) {
+				IsAlive = false;
+			}
 		}
 	}
 }

Assets/Scripts/Game/GameManager.cs

@@ -53,8 +53,8 @@ namespace Game {
 		}
 
 		private void Start() {
-			Settings.Type = Type.AI;
+			Settings.Type = Type.Hybrid;
-			Settings.AIDifficulty = Difficulty.VeryHard;
+			Settings.AIDifficulty = Difficulty.Easy;
 
 			var ball = Instantiate(ballPrefab).GetComponent<Ball>();
 			Balls.Add(ball);

Assets/Scripts/Game/Player.cs

@@ -19,7 +19,7 @@ namespace Game {
 		protected float Speed => 10;
 		
 		// Unit distance from zero
-		private float Border => 10;
+		protected float Border => 10;
 		
 		private SpeedModification speedModification;
 		private BorderModification borderModification;

ProjectSettings/DynamicsManager.asset

@@ -7,6 +7,7 @@ PhysicsManager:
   m_Gravity: {x: 0, y: -9.81, z: 0}
   m_DefaultMaterial: {fileID: 0}
   m_BounceThreshold: 2
+  m_DefaultMaxDepenetrationVelocity: 10
   m_SleepThreshold: 0.005
   m_DefaultContactOffset: 0.01
   m_DefaultSolverIterations: 6
@@ -17,7 +18,7 @@ PhysicsManager:
   m_ClothInterCollisionDistance: 0.1
   m_ClothInterCollisionStiffness: 0.2
   m_ContactsGeneration: 1
-  m_LayerCollisionMatrix: ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
+  m_LayerCollisionMatrix: fffffffffffffffffffffffff7ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
   m_AutoSimulation: 1
   m_AutoSyncTransforms: 0
   m_ReuseCollisionCallbacks: 1
@@ -32,5 +33,6 @@ PhysicsManager:
   m_FrictionType: 0
   m_EnableEnhancedDeterminism: 0
   m_EnableUnifiedHeightmaps: 1
+  m_ImprovedPatchFriction: 0
   m_SolverType: 0
   m_DefaultMaxAngularSpeed: 50

ProjectSettings/TagManager.asset

@@ -8,7 +8,7 @@ TagManager:
   - Default
   - TransparentFX
   - Ignore Raycast
-  - 
+  - Ball
   - Water
   - UI
   -