Figuring out savage mechanics

So with the release of the Savage raids yesterday, I was watching a few POV videos on YouTube as well as streams from some of my FC members. Since then, something has been bothering me a lot so I'm turning to Reddit for advice and hopefully some reassurance.

When I look at the mechanics of a Savage fight, I struggle to understand how people can figure them out given that they are so complex. I have no trouble in figuring out mechanics in normal mode and even in extreme trials, but the mechanics in Savage fights just seem to be beyond my comprehension.

I have cleared one Savage fight having watched a guide but I remember thinking at the time that there is no way I would have figured out a few of the mechanics had I been running it on day one completely blind. To make this worse, this was P1S which savage raiders consider to be laughably easy. I still don't fully get the fire/ice thing.

The thought that I'm just too stupid to do harder content is genuinely causing me some distress. If you're a Savage raider, how do you figure out the mechanics? I feel as though I will never be capable of a Savage fight and it's making me feel wildly inadequate.

Would appreciate some comfort/advice but can take the hard truths if needed.

Thanks in advance.