Fridge has frozen some of the contents

Can anyone help with a problem I am having? I am home on my own and have no-one else to ask 😅

I have just got some milk from the fridge and it has partly frozen. I also have some yogurts and a piece of salmon in there which have also frozen.

I haven't made any adjustment to it at all (there is a dial that goes from 1-5 and it' always been set at 3)
Is it broken? Why would this suddenly happen?

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Pherick · 41-45, M

As mentioned the condensor coils probably need cleaning, or you might even need to defrost your freezer. My last fridge the cold air coming into the freezer was blocked by frost, so more freezing air got pushed into the fridge, freezing things like you see.

Also you might need to get a long thing brush, like for cleaning dryers, to really get gunk out of the condenser. I really had to get into mine and I needed that thin brush to get between all the coils. The problem is thats not just dust, its dust plus grease from cooking in the kitchen and atleast for me, the vacuum couldn't quite grab it all.