Honestly if you're going into Savage or really any current end-game content without a basic understanding of your rotation or what your skills do then you really shouldn't be running that stuff. Do the easier stuff until you get the hang of it. There is no shame in getting your bearings on an easier trial, or punching the dummy until you understand it.

I am perfectly willing and often do give small tips to people if they are in need of it, ask for it, or are willing to take it - however the latter two in that list are actually quite rare. In saying that, jumping straight into Savage or the latest primal isn't really the place to learn. Jump into a primal from a few patches ago before you try and tackle the meanest stuff out.

People are generally either competent enough with their jobs and just fail mechanically on fights, or have no clue and need to go back to the dummy or easier trials. The more difficult end-game content isn't the place to try out your new jobs for the first time. You have to walk before you can run, so put in the effort and learn how to walk first.

My point here isn't targetted at those who make mechanical fails in content - as that stuff you can only learn by doing said content..
However basic fundamentals of your job should be known well enough that you can hold your own without being told to do combo 1, then combo 2, then insert random buff here...

General rule of any job is working out the priority system. If buff X is falling off/down, then do combo X to apply. If it's up, then do Y... Just reading tooltips should give you enough of the knowledge you need to do your "rotation".

If anyone wonders why they aren't improving, or just can't seem to perform as well as others - then they likely just haven't put in enough time to learn and understand how their job works.
1. Read the tooltips.
2. Hit a dummy whenever you're standing around doing nothing (which is a lot of the time. Let's be real)..
3. Get the hang of playing that job (or role) in the easier stuff, or the fights you feel confident in.
4. Have a few goes at the harder stuff and see if you succeed.
5. If you are still not up to scratch, then go back to step 1.

And when I say "hit the dummy" I mean really hit the dummy... Sit there for an unbroken 4-5 mins just hitting the thing. Casting a few spells or a few combos on the thing doesn't do anything. It's honestly how the better players learn and understand their jobs the depth that they do... If you're not a fan of parsers, then use Stone, Sky, Sea until you're improving your times.

That's both me venting, and my advice.