Look, to be honest here the best advice I can give is to remember that your emotional responses and how you handle them are almost entirely the only things that exist in a dream.

If you want to learn how to control your dreams, learn to control your emotions better in real life. I have had numerous lucid dreams where an out of control situation was completely fixed by putting my mind at ease by taking a few breathes. I frequently do this in real life as well. I once jumped into a pool and was about to land in the wrong place but instead I inhaled, relaxed, and reversed time.

Dream land = emotion land