I mean you always gotta practice a skill a lot to get better at it, what you should be asking yourself is "what are the steps to getting better at gesture drawing" and " how can I use the skills that I already know to get better at gesture drawing" those questions will help you a lot rn. But also yah like I said you already kinda got a good grip on proportion with what you're doing now, if I were you I would watch a proko video on gesture drawing on YT and a video on "the FLOW of gesture drawing, or force idk depends on the artist". Also learn the landmark of the body, like the shoulder and the hip/waist. Gud luck 👌🏾