i have a problem i did not have sendalbe merits

Well, you just trade with your merit into someone better to start posting a good one so many people will appreciate your work.
It is very difficult for JR members to get Merit.
Its difficult for everyone, its just so happen that those who are in a higher ranks make their name popular so they can easily get it but of course they deserve it also.
But if you look at some Sr/Hero account (like me), they still have no merit or lower merit because its really difficult to have it, its a matter of time and we can have want we deserve.