I can hear an echo, or my own voice

An echo, or hearing your own untouched voice, is feedback rather than a fault: sound leaves your speakers, your microphone picks it up, and round it goes.

1. 1Put headphones on. That alone ends it in most cases, because your speakers stop being part of the loop.
2. 2Select the KreatorsFactory microphone in the calling app, not your physical one. Picking the physical mic sends others your real voice — which is the version of this problem people notice last.
3. 3Turn off mic monitoring — *listen to this device* in Windows sound settings, or the equivalent on a Mac.
4. 4Turn the speakers down if headphones genuinely aren't an option.
5. 5Check the input. The converter should be listening to your real microphone, not to a virtual device — pointing it at its own output is the loop, in one step.

If the converted voice sounds robotic or stuttery instead, make sure you've actually chosen a target voice and that only one application is holding the microphone. Two apps fighting over one mic produces exactly that.