Thats a really difficult one to suggest as strength levels vary so much from person to person and even in different parts of their body. A safe bet would be around 5-8kg I think.
Your channel videos are very good. But you have done something wrong due to which the video is not getting more views. For example, your video are not properly shared on social media's platforms. There are some more issues like this if you fix them it will get a lot of views. And subscribers will come.
