then it will lead through emittor and collector
The word “lead through “ is not helpful.
A transistor can be connected in three ways, common emitter, common collector normally called an emitter follower, and common base. It is only the first two configurations you need concern yourself with.
With an NPN transistor the emitter must always be closer to the ground than the collector. It is not a switch like a relay, it matters what way up you wire it.
In the common emitter mode switch the emitter is connected to the ground, the collector to a load and the other end of the load to a positive supply. The base should have a seriese resistors in it and limit the current to about one tenth of the current the load will take.
The emitter follower mode has the emitter connected to the load and the other end of the load to ground, with the collector connected to the positive. Then any voltage on the base appears on the emitter / load only minus 0.75V. It can not act as a switch it only follows the base voltage, no base resistor is needed in this case.
Your circuit does not follow this usage.