Unfortunately, there is no miraculous program available for voice-over at the moment.
You can use the following methods for everything about how these sounds sound to your ears and the content of your video.
1- When you use TTS voice in the content of your video, it can be used if it suits the video and does not voice very robotic.
Programs I can recommend; Windows TTS, Morphvox Pro or Microsoft Azure
2- In some videos, voice change programs can work for you. Voice changer programs work perfectly, especially for bad guy or creature voices.
Programs I can recommend; Adobe Audition, Morphvox Pro, Audacity
3- If you need better voices, Replica Studio can do the job. If your attempts are successful, there's no reason not to use it.
4- For short videos, you can use the voices of your family, relatives and friends if you are not going to take a lot of their time.
5- If none of the above solve your problem, it's time to hire a voice actor from fiverr.
Some useful links;
https://azure.microsoft.com/en-us/services/cognitive-services/text-to-speech/#features
https://store.steampowered.com/app/1529570/MorphVOX_Pro_5__Voice_Changer/
https://www.audacityteam.org/
https://www.adobe.com/products/audition.html
https://replicastudios.com/
https://www.fiverr.com/categories/music-audio/voice-overs
You can use the following methods for everything about how these sounds sound to your ears and the content of your video.
1- When you use TTS voice in the content of your video, it can be used if it suits the video and does not voice very robotic.
Programs I can recommend; Windows TTS, Morphvox Pro or Microsoft Azure
2- In some videos, voice change programs can work for you. Voice changer programs work perfectly, especially for bad guy or creature voices.
Programs I can recommend; Adobe Audition, Morphvox Pro, Audacity
3- If you need better voices, Replica Studio can do the job. If your attempts are successful, there's no reason not to use it.
4- For short videos, you can use the voices of your family, relatives and friends if you are not going to take a lot of their time.
5- If none of the above solve your problem, it's time to hire a voice actor from fiverr.
Some useful links;
https://azure.microsoft.com/en-us/services/cognitive-services/text-to-speech/#features
https://store.steampowered.com/app/1529570/MorphVOX_Pro_5__Voice_Changer/
https://www.audacityteam.org/
https://www.adobe.com/products/audition.html
https://replicastudios.com/
https://www.fiverr.com/categories/music-audio/voice-overs