help me make a bi-directional motor circuit?
For reference, here is your circuit that is being discussed:



Your double emitter follower is a valid approach for a low power motor.

But, the way you're driving the bases makes little sense.  Tie the bases together and drive them directly from the opamp output.  I can't guess what you think the resistors are supposed to accomplish.  Then take the feedback from the motor voltage, not the opamp output.  It's the motor voltage you're trying to control.

After schematic update

Here is the schematic we are now discussing:



Problems:

You didn't connect the controlled power voltage to the motor!  The purpose of the double emitter follower is to provide current gain for driving the motor.  The output of this current amplifier is the two emitters connected together.  That's what should be driving the top side of the motor.

All you have connected is the feedback signal, which isn't able to drive anything.

You eliminated the negative supply!  I can't even guess why you think that was a good idea.  I didn't mention anything about the negative supply before since it was fine.  Of course you can only drive the motor in one direction if one side is grounded and all the other voltages are positive.  You have left no way to apply a negative voltage to the motor.

A 741 opamp is a poor choice.  You have only a 9 V supply.  The emitter follower will drop 700 mV or so, and this opamp can't go all the way to the rails.  With a &plusmn;9 V supply, you should at least get some results, though.



Go back to the original circuit and try what I said.