Why MOSFET makes Motor ON directly?
The circuit you show should work.  You probably don't have something connected correctly.  For example, if the drain and source of the FET were flipped, you'd get exactly the symptom you see due to the body diode of the FET conducting.

Check the FET datasheet and your connections carefully.

Measure the gate voltage with a voltmeter, and verify that it really is 0 V.