Elara knew what she needed. The old way. The precise way.
Within minutes, she changed a single capacitor value from 100 pF to 47 pF in the virtual schematic. The oscillation vanished. Multisim 14.1 Download
She placed a 2N3904. An inductor. A trimmer cap. She connected the virtual oscilloscope probe to the output node. Then, with a click of the button, she hit the Simulate . Elara knew what she needed