I have a kitchen utensil which I don’t know what’s for. It has a big metal loop and a plastic handle

I believe what you have there is the handle for a Thai coffee/tea strainer with a removable bag. They sell them on Amazon for around 10 bucks. I got a similar one in Korea, ages ago- used to strain soups, tea, etc. The bags will either zip on or go on with a velcro or pull tie system. You take them off to wash.

Maybe send your inquiry to one or two guys who test kitchen gadgets. They have seen, used and or designed hundreds.
Barry Lewis - a British self educated home cook on YouTube, instagrams, etc.
Gadget designed at Epicurious- sorry forget his name. he’s in videos on their youtube channel, or you could try their website.

I agree that something is supposed to go inside...like it's meant to help lift something hot like a bowl out of boiling water. But who knows. I suggest posting this picture on Reddit's subreddit Whatisthisthing. You'll probably get an id within the day!

Beat me but now that a photo has been posted, it's clearly not a pastry cutter.

The tool might be incomplete in its current state. I suspect something is meant to fit inside the circular part of the loop.

I will bow out of this discussion. With the photograph now hopefully posted someone else can pick up here.

Best of luck.

Photo of utensil attached

Pity no photograph was shared.

I'll take a wild guess and say it's a pastry cutter/dough blender.