Having trouble on Breach, early end game

Im a new PoE2 player who does not have much experience in the game, so feel free to provide me some helpful information, even the information that seems basic.

I just finished campaign and running on maps, however i have a hard time on breach content, i can easily clear mobs on other part but when i touch that hand, all the alien mobs just swarmed and kill me and my spark seem useless in contrast with regular mobs.

Im a lvl73 stromwaever and I think I have decent gears for early endgame because i actually have no trouble on other parts.

Is there anything i could be missing?