Refrigerator doors

https://www.recubed.solutions/
Works great, tad overpriced but so is unloading your fridge going down the road. I use mine on a 3-door Samsung RF-18. He is sorta a one-man show and might take a day or two to get back with you.

I have seen a picture of someone who cut a piece of plywood in a U shape, covered it with some scrap carpet, slips it in the door handles and the legs hold the freezer closed.
SWMBO didn't approve of that method so...

Also the standard supply of kid locks will work. I use one of the stick on type on the microwave door to keep it from launching the turntable out. $40 later of course and still finding glass in places.

I used baby latches that you can buy at Walmart. Its a short strap that has adhesives on both ends.

I wrap a bungee cord thru the handles. Works for us as we travel.

What size fridge is it? I used two common double hung window latches to secure the doors on our top freezer 10 cu. ft. residential fridge.

this is what we use

This what we use for our french door refrigerator.

It will come open. Bungee sounds like a good idea.