I keep using standard snare trap on the special event bunnies and it keeps saying "Pet is too powerful to catch" and not letting me catch any of them. I really would like to catch a bunny please help.

You should be able to catch them with the Standard Trap that you can get from Umbra. With those, you can catch uncommons (green stars) and rares (blue stars).
However, you cannot catch epics (purple stars), which was what I ran into. The strongest gold-bought trap is the Standard Trap, so you can only catch up to the blue-starred bunnies.

Unless you buy the masterful trap, which is a cash item in the Diamond Shop...

Yep. Likely the special event bunnies you're trying to catch are epic quality pets, for which we have no traps available for. Unless you buy the cash shop pet. Other than that, kinda outta luck on that front.

ok makes sense thank you

If you have access to Sanctuary of Saerielle you can buy the traps that can catch the epic quality pets now.