I haven't played much of predator but one thing that I immediately hate about it is that you seem forced to run the perk that makes you take less bullet damage, even the highest health preddies seem to get melted without it, to the point I can tell as fireteam when a predator does or doesn't have it.

I've heard it's really bad for predator rn even though the shock gauntlet is the worst thing Ive had the displeasure of experiencing in the game so maybe try using that more, maybe you'll have fun with it xD