Helix Syn Trident is too big for me… is there another model that works?

I’m completely new to this so please bear with me…

I ordered and just received the Helix Syn Trident after seeing it being recommended as beginner friendly. But I was surprised to see the size. My wife tried inserting her index finger and even that was painful, so I’m not sure how I can fit this inside of me. I’ve suffered from an anal fissure in the past so I don’t want to risk re-tearing it.

Is there another model that could work for me? Or can the Helix Syn Trident fit inside me if I’m patient enough with it?