If you have audio files, speeches, courses and you want to transcribe them into text files, there is a very handy online tool: https://otranscribe.com/

oTranscribe allows you to upload the audio file, play it, slow down or speed up the playback, and while listening, you type the text you hear.

Currently, there are no tools that perform voice recognition via audio files of all kinds. Yes, well, there are voice recognition software based on your own voice (https://www.nuance.com/dragon/dragon-anywhere.html), with a lot of training, the software can 'guess' what you are saying but it will only adapt to your voice. Moreover, this software needs to be preformatted to recognize French because many recognize English but few recognize French.
YouTube is the only one I know that offers live voice recognition and displays subtitles, but as you have noticed, it is full of errors, but we are making progress!