Many people admit to disliking the sound of their own voice. The issue is made more frustrating by the common assumption that there’s nothing you can do to change it, that you’re born with that voice and therefore stuck with it. While there certainly are certain aspects of your voice that are inherited and part of your physiology, there is a substantial part of your voice that’s learned and reinforced by habit. Those behaviours can be changed with practice and the development of good technique. Everyone can have a good speaking voice.
Stop listening to yourself. Learn to monitor your performance by noticing how it feels. The better your voice feels in your body the better it sounds to your listeners.