This has been a problem for me for a long time, I'd say about 5-6 months I've had this problem. The problem is that for some reason I can't make buckets in any of my survival worlds. Even when I start a new survival world I search up "Buckets" in the crafting table and nothing shows up. And yes I do have the materials to craft a bucket, but when I put the iron ingots in the correct order the bucket doesn't show up.