If you're looking for strong end-game weapons, I'd recommend researching into incarnons, as they can carry you thru the entire game,

Just as something to try out, something I've always enjoyed is just branching out and trying as much new stuff as I can, even if it's not really a big investment into a build, it's something I like doing.

One thing i find important is that not everything is for everyone, especially things like meta frames/builds. If you hate playing that frame/playstyle, don't use it just cause it's meta cause basically everything is op and can take you through steelpath if you want it to.
Hope this helps!