Stricken vs trapped

Hi

I have some questions about GoD build and achieving higher gr. Beyond the obvious like augments, paragon, gem levels.

First one, I am wondering why GoD solo builds run with stricken.
It seems to me that trapped by far provides an overall better killing speed. Which should out perform stricken. I mean, killing the guardian is important. But you need to get there first…

I am probably missing something here. Could be as simple as my low clears (gr102), but still.

So, can some one perhaps provide some explanation about this, please?

Another one, how can I achieve gr 125 or 130 with my build? Really just getting more paragon, gem levels and augments? Or do I also need to change my build in a way allowing for achieving higher gr?

(I have no decent FoT).

Weapen question.
I read in this forum, that the main weapon is just the one with highest damage. Its legendary power seems irrelevant even.
I usually run UE build, because i like it. Despite it not being the best for quite some time, I know. Now that I’m not running UE this season, I got a primal Yang’s, early on… lol. So should I use that one because of its high damage?

Leveling my gems is imperative too, I know. But can’t get them much higher atm. I usually play solo. I have low paragon, so group play seems impossible.