https://www.musical-u.com/learn/how-to-improvise-on-piano/
Piano is probably the most versatile of instruments in the variety of arrangements, styles and complexity of music it can produce – making it both one of the most powerful and most intimidating instruments for learning to improvise. Fortunately there are some simple steps you can take to gradually become an expert piano improviser. https://www.musical-u.com/learn/how-to-improvise-on-piano/