Many times ...,

[Silverobama]

Many times, due to a lack of knowledge, when you all are discussing deep topics in English, I can only listen to you.

Is the above sentence natural? The context is "David and Yan are very knowledgeable and have a big vocabulary. Each time when they talk to each other, I can just listen because I don't have a huge vocabulary and I don't know what to say“.

 

[teechar]

Many times, due to a lack of knowledge, Whenever you all are discussing deep/complex topics in English, I can only listen. I don't feel confident enough to participate, because (I feel) my vocabulary is limited. to you.

Is the above sentence natural? The context is: David and Yan are very knowledgeable and have a big extensive English vocabulary. Each time When they talk to each other, converse in English, I can just listen because I don't have a huge the necessary vocabulary and I don't know what to say.

See above.