I teach gun fighting to commandos for a living.
Dry fire is essential.
1. You develop trigger control. Nothing like dropping the hammer without noise and recoil to show you (via site movement) what is happening. Hint (sorry, couldn't resist)
2. Dry fire should be extended to weapons manipulation ie, draw, presentation, reloading and stoppage mitigation.
I Dry fire at the TV, action movies are challenging.
Start by ensuring the weapon is unloaded, seriously!
Begin at full presentation.
Advance to include presentation from high ready.
Incorporate a full draw when you're feeling squirrelly.
Not a gun writer
Yep. You don’t want to pull an Elvis! 📺🔫