this is a very confusing thing… simply… there is a concept between what i call the Physical Pin (or Board Pin#) and the Logical Pin (or Chip Pin#)
so each board is numbered 0-10… but each chip model may have any number of pins… lets say 44 pins… if even pin 0 on the chip is ground… then just this will throw everything off by 1
if you look at this drawing you can see that pin #6 is actually GPIO 43
this causes problems when coding… because there are 2 ways to address this pin in the code many new people do not understand the concept of abstraction and if they dint have the correct Board Support Package Selected nothing will work… I also learned this the hard way by asking questions on the forum
https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/XIAO_ESP32S3_Sense_Pinout.xlsx