How to improve the circuit for carbon mic

[nishi]

I painstakingly converted a carbon mic taken from an old phone to an XLR. A rough circuit is shown. (may be wrong)
Carbon mics are current output, so It needs a way to convert current to voltage. Therefore I used a 200Ω resistor.
The rated voltage of this microphone is roughly 3V, but since it was unclear whether the current required to drive the microphone could be extracted from the phantom power supply, 5V was obtained from the USB port and stepped down to 3.3V using a 3-terminal regulator.

It sounds really beautiful. When I tilt a carbon mic, it makes a ripple-like noise.

I have a question:
Are resistors the best solution for converting current to voltage? Is opamp better?
What is needed for better sound quality?

 

[Екатерина]

The sound quality is a very subjective thing, and the operational amplifier may not be able to better adapt to this work