If anyone knows any site that buys selling Bitcoin worldwide and doesn't have any verification and most important trustworthy..?
Any site that doesn't want to know who you are, will get abused by scammers.
That means legit sites will want to know who you are, and if they don't ask that, you're probably better off not trusting them.
somewhat agreed with you.But problem is most of sites doesn't support my country.and here this forum very few members are trusted and their rate also high.