Hey @n00begon, I worked on a localization build and am hoping you can give it another go. Try updating the language selection in the lower right corner to see if it recognizes your commands more clearly: https://elocnat.itch.io/tetrivoice-test?secret=qmwfVbCGjqVILrvR2xL6htNZEw (Make sure to use Chrome!)
If you get a chance to try it, please let me know if it's any better. Thanks!