youtube Related video issue please help

Hi ,
I have a new YT channel and there is a problem that i can't understand tell now.
The problem is there is some of my videos " when i play it for testing i noticed that the up next videos and related beside my own video are just the same 4 popular videos in my country. Ex attached.
This problem exists in more than one video in my channel,
While I have other videos that do not have this problem. Ex attached.
I tried to get the problem reason by Make a comparison to these videos setting and still not understand.
Any one can help please,
Sorry for my English, I hope that i could explain the problem well.

Oh Shit,
It also never appears in search even though it is in public mode. What's wrong with these videos.

I had this problem yesterday night but today it seems normal.