There is the possibility of putting the different speeches, whether in the scenarios or in the tutorial, in the user's language; not only in English.
Here is a list of some sites that can be used.
- Where we need pay
- https://murf.ai/ A site where I find a few voice that I like.
- https://wideo.co/ (2000 character free /day
- https://notevibes.com/
- Free site, but it's a voice of robot