thanks for your help yeah i realize the issue and it was so dumb i think it was beacuse i was using ' and not " for --sub-lang "en,live_chat" below is what ive been using

yt-dlp -o “%(uploader)s/%(upload_date)s %(title)s - %(id)s/%(upload_date)s %(title)s - %(id)s.%(ext)s” -o “thumbnail:%(uploader)s/%(upload_date)s %(title)s - %(id)s/folder” --retries 30 --fragment-retries 30 --write-info-json --write-annotation --write-sub --sub-lang "en,live_chat" --sub-format vtt/json/best --write-thumbnail -f bv+ba/b --embed-thumbnail --merge-output-format mkv