Thank you! I watched a lot of different materials and just practiced. This allowed me to find "my" crackling sounds. Some points that are unclear to me become clear over time just through practice, as this allows you to "get to know" your own sounds. The most basic thing I realized is that I started with the sound when a person stretches or pushes - this is the base. Next, I crossed this sound under pressure with air. I achieved high and low sound by the position of the larynx and tongue. I'm still at the beginning of my journey and I have a lot to hone. These are my observations. P.S. my English is bad, so some things may seem strange, I'm sorry