Hisir hhafizmuhammadzeeshan ,
You really need a better translator π
And at least add a timestamp, so we can try to figure out what you are talking about.
Can you maybe upload a small screen grab video to see what might be going on? If not add some screenshots and try to give more context. You can also try it again, go back in the video and try to follow as best you can and with the same Blender version the teacher is using.