I tried

So you're simply bad at the game and moan that your homecooked builds suck big time? Imagine struggling with acts when they're a tutorial, real game doesn't even start until you're deep into maps, not getting owned in T1 lol. If you take more than 2-3 hits to down any white mob and it isn't act 1 then there's something seriously wrong with either your build, gear or both.

To put it bluntly: you need to learn more about the game. There is no shame in this. Everyone had to start somewhere. You'll need to figure out how your character works, boss abilities, how skills scale, etc.

Even someone like me can progress through the campaign with minimal issues. Now, the big difference here is that when I encountered a problem I took the time to figure out how to overcome it. Do the same (or just stop playing if you don't feel like it. Spend your free time how you want).