chunks not being added at the correct position when adding new chunks

Question

im trying to make the world size in my game dynamic and the chunks aren't being added at the correct spot when i go past an edge

checkrenderdistance():

        void CheckRenderDistance()
        {
            if (player.Position.X > CurrentWorldSize * Chunk.Size)
            {
                Vector3i chpos = ChunkInWorld((int)player.Position.X, (int)player.Position.Y, (int)player.Position.Z) * Chunk.Size;
                Vector3i pos = new Vector3i((int)player.Position.X * (CurrentWorldSize * Chunk.Size), 0, (int)player.Position.Y * (CurrentWorldSize * Chunk.Size));

                GenerateChunkRegion(pos * chpos);

                Debug.Log("f");
            }
        }

generatechunkregion():

        public void GenerateChunkRegion(Vector3i pos = null)
    {
        if(pos == null)
        {
            pos = new Vector3i(0, 0, 0);
        }
        for(int x = 0;x<Chunk.Size * renderdistance; x++)
        {

            for(int y = 0 ;y < 256; y++)
            {
                for(int z = 0;z<Chunk.Size * renderdistance; z++)
                {
                    SetVoxel(x + pos.X, y + pos.Y, z + pos.Z, GetVoxelP(x + (pos.X * Chunk.Size),y + (pos.Y * Chunk.Size),z + (pos.Z * Chunk.Size)));
                }
            }
        }
        CurrentWorldSize += renderdistance;
        Debug.Log("Current World Size:" + CurrentWorldSize + " Current Voxel Count:" + (CurrentWorldSize * Chunk.ChunkVoxelCount));
    }

chunkinworld():

        public static Vector3i ChunkInWorld(int x, int y, int z) => new Vector3i
    (
        x < 0 ? (x + 1) / Chunk.Size - 1 : x / Chunk.Size,
        y < 0 ? (y + 1) / Chunk.Size - 1 : y / Chunk.Size,
        z < 1 ? (z + 1) / Chunk.Size - 1 : z / Chunk.Size
    );