Problem with for loop using if statements

 public void DestroyItemInInventory(string itemname)
 {
         founditem = false;
         for(int i = 0; i < maxInventorySpace; i++)
         {
             if(TNManager.GetPlayerData<string>($"InventorySlot{i}") == itemname) 
             {
                 if(founditem == false)
                 {
                     Debug.Log("I is : " + i);
                     Debug.Log("found an item in playerdata to delete + found item = " + founditem);
                     TNManager.SetPlayerData($"InventorySlot{i}", null);
                     founditem = true;
                     SortServerInventory();
                 }
             } 
         }
     }

as you can see, im using a simple for loop to itterate trough inventory items. When ive found the item im looking for, i expect the founditem bool to turn to true, but it is not. I have spent 10 hours on this, and i thought i was a pretty good coder, but this loop has me question everything.

Im using TNet as a multiplayer platform.

Im including two pictures to help show you guys what i mean.