I can't do all workouts from the exercises of yoga.
How can i reach better results?
Yoga is all about you know flexibility. You can't expect to just be able to do advanced yoga moves. If your really serious about acheieveing better yoga poses you should enroll in a local yoga class where a guru can guide you.
You might look into some online videos that will help with this. I recently made 60 of them but not sure where the client put them. I'll look for it and let you know.
Also, buy a big mirror so you can watch your posture. And remember that breathing is the biggest key.