Coaching is it worth it?

I've already tried badminton training camps, summer camps, small group training (semi-private), and even private coaching (2–3 people). However, I've never had one-on-one coaching.

From my experience, coaches never really give me advice on how to improve—their main focus is just feeding shuttles. I learned my footwork through shadow practice on court and YouTube, not from my coaches.

They never properly taught us how to smash. Everyone in our club has a different smash technique, and some have improper form because the right technique was never taught step by step.The key elements shown in YouTube tutorials—kinetic chain, rotation, and proper mechanics—were never corrected. As long as you can hit the shuttle and it looks like a smash, they're okay with it.

From time to time, they’ll give vague instructions like:
- "Get behind the shuttle." - "Take bigger steps." - "Your footwork is wrong."

But they don’t explain exactly what to fix. Even if you ask, they’ll demonstrate once and move on.

When I watch YouTube tutorials and coaching videos, especially from Korean coaches, I see a much greater focus on detailed technique and correction. I've never experienced that level of coaching in real life.

So, I’m wondering—is this normal in other countries as well?

At this point, I'm questioning whether coaching is still worth it. Would it be better to just play with advanced players instead? Or should private coaching only be used for learning specific shots and techniques?