Adafruit mono 2.5W Class D Audio Amplifier - PAM8302 not working

(The book from I what I saw on google preview looks very nice...)

Something like this (please see attachment)?
The time difference between the 2 curves is because of the capacitors?

And of course I display simulation 3 (please see attachment) where I want to achieve Gain = 3, trying for so many days, and does not work...

Thank you...

simulation_2_2.jpg

simulation_3_2.jpg