I believe that before Christ’s second coming

Hey guys,
I believe that before Christ’s second coming, everything will be bad. 666, anti-Christ and rapture will happen. And after all these, before Christ comes again there is a chance for others to repent.

Anyone care to share if im right or wrong? If you can find bible verse or reference much better.
God bless

Edit:
Thank you guys and gals who took their time providing the scriptures i need. I just need assurance of this and cant find it myself.
Thank you again and to all of you, God bless.