Honestly I haven’t seen almost anyone use this action skill. I used it while leveling up a new Fl4k character a few months back but ditched it once I realized how underwhelming it was.
Here’s a thread of Fl4k players suggesting ideas to make it better if you’re interested in more discussion about it
I used the Gravity Snare quite a bit when it was fairly new but I lost interest after a few hours of play at max level. It’s a neat concept but even with the best augments its a bit of a let-down in my opinion. I would use it if it received some buffs, but FL4K’s Purple Tree would also need to be buffed so investing into the tree for augments doesn’t feel like as much of a waste.