[fChk]

I am facing some problems in using microsoft edge and google chrome as well. Both of these browsers are showing most of the websites un-secure and sometime load broken webpages. When i load those pages in firefox it works well. Now i am confused that which is true? Firefox or Chrome and Edge?
(...)

The crucial information is in your second post, ie:

I am using Windows 7 Professional without any antivirus. I don't know what is problem. It is a fresh installed windows. What can i do? Do i try finding something in Windows Firewall and Security management?
I want to use windows 10 but those automatic updates. -_-

That means the Trusted Root Certificates are obsoletes, given that your system is obsolete and that Chrome and its clone(/Edge) rely on it on Windows for validating certificates.

You should try using another OS, preferably Linux-based, or just stick to Firefox; it's the better one of the three anyway!