The input voltages +1.2V and +4.5V are wrong. They should be +0.1V and +5.9V from the microcontroller since the L293 is not needed. Then the transistors that are supposed to be turned off will be turned off.would be something like this?
Your voltmeter shows -2.4V at the base-emitter of Q2 which is impossible.
The base-emitter of Q1 and Q3 do not have a current-limiting resistor in series.
There is no current-limiting resistor between the emitter of Q5 and the base of Q6 because R5 is in the wrong location. R6 is correct.