Since you don't believe that God created the first man Adam, then of course you can't believe anything else about Jesus in reference to what the Bible says.
Of course I can.
Belief requires nothing other than belief. Belief is easy for humans.
It is doubt that is hard to come by. Not doubt in someone else's beliefs but doubt in your own beliefs.
I suspect I have believed in a greater number of things than you have.
Belief in the Bible, Christianity and the God of Abraham takes nothing. It's only one God.
There are hundreds of Gods one can believe in.
If belief were all that was required to make something true, there'd be more Gods than people walking about on earth.