Need suggestion for developing this product

I believe that's a loft...
You made it pretty similar, but yours is slightly bent at the middle of the handle, while the one in the image is smoothly curved.
Sth. else, the part in the circle you've made seems to be slightly curved inwards, which means that your loft profiles need to be edited.
To make that, I'll make a new loft profile at the middle of the square extrusion, where the sketch will contain a quadrilateral with one of the sides a curve.
BTW, don't forget to make some fillets along the handle's edges.