Q: How do you improvise while playing on the piano? I've been trying to learn how to improvise but every single time I try something it sounds horrible
A: yes, this is normal until you spend much more time (perhaps years) getting comfortable. think back to the first words you ever spoke. they were perhaps not your best sentences. think of the gradual process you went through to develop the skills to improvise the words and sentences as you speak them. it's hard to say how exactly we learn to do this, but just live your life and keep using the instrument as a part of your life