This is the [Gara] build I use that can handle like 90% of game content solo. It is not the highest damage nuke, or the most minmaxed steel path build, or anything like that. There's better builds on here for more specific content.
However, what it is, is extremely comfortable. Has a nice long timer on splinter storm as well. I occasionally switch [Shattered Storm] for [Mending Splinters] for things like Defection or very squishy defense targets. Having both [Adaptation] and [Rolling Guard] is extreme overkill so swap out [Adaptation] for any mod covering an area that feels lacking (most likely range)
I do use this build for Steel Path with success but I know it's not the most optimized for it so find another build if you want that. I just like being comfy.
Sometimes I put Roar on with Helminth because her 3 has limited utility but I honestly don't notice enough difference to consider it essential. Might find a Helminth ability I do really like for her in the future.