I tried "Your Shape" for PC once and it was awful. It doesn't sound like the version you have though Firi. The one I had was pretty discouraging. The virtual "instructor" kept up a steady barrage of "you're not doing it right" commentary and she looked like a Barbie doll. While I liked the exercise (even though I could never apparently do the movements properly), I gave up on it because I wanted to throttle the Barbie doll...lol.
That does sound like another version. The instructor in my game is just a voice (the figures showing the exercises always look different, whereas the voice stays the same), and she keeps encouraging me, saying how well I did even when I just got around 50% of the exercises right. She sometimes corrects me when I do something wrong, but I think I've never heard her say "you're doing it wrong" or anything like it. I'm sure the game I have is a newer one, and when they made this one the developers might have learned a little more on how to encourage players to keep playing.
Prophet of the Sacred Revelations of Oswald Member of The Guild of Fellowship