You understood the situation
Another problem for me was playing on clay for just the second time in my life
I've always played on hard and I've problem with clay's bounce,especially on forehand
Don't worry, you're not the only one! The movement on clay is a nightmare for anyone who hasn't grown up playing on the surface, and that includes the pros even. I'm just glad no one has filmed my futile attempts at sliding around on the clay and probably looking retarded
Luckily nearly all fast carpet and hardcourt where I live though, where I'm much more at home!