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.