MCUFriend 3.5 inch LCD with ILI9488 and Touchscreen

I have no explanation. It is usig the same pins as you used in the Original Post.

I was hoping that the new sketch would be more reliable than the previous one.
And the results easier to understand.

At least you have a choice of sketches to use.
You can uncomment the print statement in the readResistiveTouch() function.

David.