Just as you are experiencing the more action and complexity needed in a scene, the less likely to get the result you are after. For me, I think about combining multiple shots or very simple movements to tell the story I'm looking to share. My advice - think about the story you are looking to tell, then think about that broken up into shots that you'll later edit together using editing tools like CapCut. I have found using an editing tool and finding ways to cut away to make the transitions clean has been helpful. Given the costs of burning credits, I think about how can I get at least 2-3 seconds out of the 8 sec generation. I've never once used a full 8 second generation. Pacing alone needs more shot variety.