War Strategies

I need some help with war strategies:

From what I've found, it looks like LaLoonion or Bowler+Healers are the main strategies? Am I right?

Then for the part I'm struggling with... are there any actual tutorials on these strategies? I watched a handful of YouTube videos on LaLoonion and they all show you a whole bunch of awesome 3 star attacks, but don't give any advice on how to actually do the attack, what to look out for etc.

I tried a few raid attacks and failed dismally... never mind the 3 star, I got 1 or zero. No idea what I'm doing wrong.

My troops levels are:
Lava:4
Minion:7
Loon:6
Haste:3
Rage:5

I haven't found any youtube videos on Bowler+Healer ... I'm wondering if I got this all wrong and it's not actually a viable strategy.

Thank