用英语该怎么说？下面的句子

please add word title abrove the viedo,English is not my mother language and I can not understand what you say.
But I can read it.thank you.

Please add the following in the video subtitles, my mother tongue is not English, I do not understand you, but I can understand. Thanks!

Please add subtitles at the bottom of the video,I can't make sense of what you say as my mother language is not English,but I can understand the subtitles,Thank you.

Can you please add subtitles to the videos? English is not my first language, and I cannot understand it verbally. However， I can comprehend what is written. Thank you！

你能不能在视频的下面添加字幕？ 我的母语不是英语，我听不懂你们说出来的话。但我可以看懂。谢谢！

我把它换成了问句，在英文里更有礼貌，更正式。
而且用词也是书面用语（正式）