Can't beat diablo, build and grinding advice

What is the best way for me to beat Diablo? What items should I look for? Should I just try to increase CR?

I have been choosing items based on item score and I don’t know if that is a good idea or not?

Also how and where should I grind to get the items I need? I am currently 215 paragon score

He’s tough no matter when for lower level players. It’s a mix of combat rating, skill and experience. It’s also difficult not having the higher level essences which most builds require.

if i level up my stats i know he just scales anyway too.

what do you recommend i do, just try up my combat rating and essences?

or is it just pointless and he is meant to be a paywall boss essentially unless you grind absurd amounts

He’s not paywall at al but most players were at paragon 600 when he was released. I’m not sure how he scales but it’s the same no matter the difficulty

i don’t understand the logic of the difficulty in this game at all.

the whole campaign is very easy, then they throw a super hard boss that is basically a massive stat check since you have to somehow kill the demon mobs he sends, which i lack the dps to do before they get me.

the difficulty balancing is really absurd

The entire battle with him is weird. Afterwards for the weekly rewards his health is more than halved. First time with capped gear took me 10 min on both my accounts.