Single Status Update
This circuit is 100% working. This is simplified diagram
No Any Direct Supply given on ic , Resistor is used
volume control connection is right. Check again
Which inverter circuit is wrong, tell me .
I will modify if any wrong
The volume control in your amplifier schematic is backwards. When it is turned down then instead of simply making a voltage divider with the signal, it shorts the input signal's high frequencies to ground but allows very low frequencies to be amplified.
This diagram is only for instructional. These common matters are understand by reader.