Help a new player with Be a Pro mode

Hello everyone!

I have a question about Be a Pro mode.

Never played NHL games before, have liitle viewer expirience, but loving my time with the game. I am playing "Pro" level difficulty, winning some loosing little more it doesn't bug me but what does is AI behavior: Opposing team AI is playing great deffence, poking the puck, budy checking if getting too close. When on attack my D-man allows the attacker to get into the zone come close enough to do at least 1 shot and then play off rebound. Me or my teammate AI will be overwhelmed by D second after entering the zone, what can i do about it, maybe and advice where and how i should position my player on attack (with D there are less questions, because there is an option that shows a big square and some arrows to help me understand what should i do),

Also want to mention how many times i'am skating towards and got body checked from behind (litterally on my players back)  and SUDDENLY puck drops (completle stops or starts to slide) behind my player? How do i play around it?

I'am seeking help from expirienced players, because all youtube vids are targeted on more expirienced audience and simple questions like mine are never answered.  I am sorry if this is riddiculously bad questions to ask, but figuring out it on my own tends to be a VERY long journey