assigning gameobjects to an 2Darray

really new to Unity and I am trying to recreate a minesweeper kind of game with variable level sizes. i am getting a lot of different pieces from different tutorials and i have figured out how to dynamically create the playing field gameobjects but to do most of the game logic i need to assign these to an array.

and this is where i got stuck. i was successful at first with using the x,y location of the gameobject to assign it in the correct location of the array but now i switch to adaptive screensizes i am not sure anymore how to get the gameobjects into the array.

i had this part when the game objects had a fixed position:

 //register to grid
         int x = (int)transform.position.x;
         int y = (int)transform.position.y;
            
         Grid.elementArray[x, y] = this;

and i am hoping new logic in here when i create the grid. i am looking for any help trying to either find the position of each gameobject. or just a better solution to my problem the i am working towards. it is either really simple and i am not seeing it or i really do not understand arrays.

  public void GenerateGrid()
     {
 
         GameObject cellInputField;
         RectTransform rowParent;
         
         for (int rowIndex = 0; rowIndex < numOfRows; rowIndex++)
         {
             rowParent = (RectTransform)Instantiate(panelRow);
             rowParent.transform.SetParent(Gridset);
             rowParent.transform.localScale = Vector3.one;
             
             for (int colIndex = 0; colIndex < numOfColumns; colIndex++)
             {
                 cellInputField = (GameObject)Instantiate(cellgrid);
                 cellInputField.transform.SetParent(rowParent);
                 cellInputField.GetComponent<RectTransform>().localScale = Vector3.one;
                 
                 countTotCell += 1;
                 
                 
 
             }
             
         }