Hi there. It is very normal to experience these things, especially if you're having your first few lucids. Keeo in mind that your dream control can vary a lot, and can be affected by how you think. I suggest the next time you get lucid, take a moment to gather yourself and perhaps even do verbal mantras telling yourself what you're gonna do. For example, if you wanna fly again, tell yourself loudly "I am gonna jump and I'm gonna fly and it's gonna be awesome." basically convince yourself, to boost your self-confidence. Hopefully the real-life hardwiring in your brain will be overrridden the more you do it, which I am pretty sure it will good luck!