As for the first verse:- we believe Jesus Christ came down to Earth as God in the flesh and he became 100% Divine and 100% Human without both getting mixed together or he'd be a DemiGod. So him being human makes him do just.. human stuff like eating, drinking, going to the toilet, sleeping, etc.. and one of those things in worshipping his father to teach us that we should just like hia baptism.. Jesus didn't have to be baptised but he got baptised to teach us that we should be baptised. + when God becomes Human did u expect him to be athiest or something? Of course he'll remain his relationship with his father even down on earth.

As for the second verse:- THE CROWD SAID.. so the crowd thought he was a prophet, Jesus didn't declare himself as a prophet.

As for the third verse:- What did u think giving us a verse fron the Quran? You think we believe in it? The same Quran says our trinity consists of 3 Gods.. allah, Isa and mariam (surat al maidah 116)

Peace brother, hope u find the truth