Engine knocking In gear three?

It sounds like the knock can be an engine misfire; do you have a check engine light on? If so, let's run the codes to see which codes are stored which can be an ignition coil or spark plug issue.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is a guide to help us go over engine knocking and what will cause it:

https://www.2carpros.com/articles/understanding-and-repairing-engine-knocking-noise-an-in-depth-guide

Can you please shoot a quick video with your phone so I can hear the noise? That way I can tell for sure what's going on. Please go over these guides and get back to us.

Video while engine just working or during driving?
Engine light is on and has error code I think 0U014 is error.

Actually its Shocking knock during driving and gear shifting 2 to 3 and 4 to 3.

Engine working normal driving and shifting gear make shock during drive.

It seems like it is running okay, thanks for the video. Have you tried new spark plugs and ignition coils? Also, the code does not make sense. Do you have a p0301 style code?

Spark plugs were replaced recently, I will check again today and send you engine error code screen shot, it may help more. I think it can be from transmission gear box system. Thanks for support.

Yes, errors codes can help us. Also, I would replace the ignition coils and make sure none of the spark plugs are cracked, which is common.