Topdown Recoil script

Idk if you have figured this out already but I'll leave this here incase anyone is having trouble as well. You just multiply your firepoint direction vector with a matrix of the vector made from an constrained angle you want your bullets to recoil in. Just apply this script to your bullet when firing:

     Matrix4x4 recoilMatrix = new Matrix4x4();
     Vector4 recoil = new Vector4();
     float angle = Mathf.Deg2Rad * Random.Range(-5f,5f); //recoil is 10 degrees total but you can change this
     recoil.x = Mathf.Cos(angle);
     recoil.y = Mathf.Sin(angle);
     recoilMatrix[0, 0] = recoil.x;
     recoilMatrix[0, 1] = -recoil.y;
     recoilMatrix[1, 0] = recoil.y;
     recoilMatrix[1, 1] = recoil.x;

     Vector3 direction = recoilMatrix.MultiplyVector(firePoint.up);
     rb.AddForce(direction * bulletForce, ForceMode2D.Impulse); //your bullet movement script