Voltage and current controller problem
simulate this circuit &ndash; Schematic created using CircuitLab
Figure 1. Original and redrawn circuits.
The convention is that schematics are drawn with higher voltages at the top and ground at the bottom and reading left to right. That way we will generally be able to trace current flow from top to bottom and signal flow from left to right. We can also use the GND symbol to eliminate a bunch of wires to reduce clutter. Which is easier to read and understand?
Once we untangle your schematic it becomes very clear that there is no way for current to go from the 9V+ terminal to the lamp. Neither Q1 or Q2 have a positive supply connection.
If you are updating your question then please add in some explanation of how you expect your design to work.




simulate this circuit
Figure 2. OP's update.
Once we redraw the circuit with conventional layout it becomes clear that Q4 is upside down and cannot conduct to pass current to LAMP3.