About the last sentence:
You can emphasize on this sentence in 2 ways:
1. NOBODY wants to talk to him. (As if you are probably trying to say that there is something wrong with everyone else.)
=> কেউ তাঁর সাথে কথা বলতে চায় না ।
2. Nobody wants to talk to HIM. (As if there is something wrong with the person, not everyone else.)
=> তাঁর সাথে কেউই কথা বলতে চায় না । (*Adding "~ই" after "কেউ" makes the situation/the 'person' more neglected! )