Ok so gonna be honest, it wouldn't let me upload the crafting images, BUT it's okay because they're shapeless, meaning they don't have to be put in a specific order.

So all you have to do is put a Flint and Steel with any Raw Food
This Includes,
Raw Beef
Raw Chicken
Raw Mutton
Raw Salmon
Raw Rabbit
Raw Porkchop
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So since you're gonna need a lot of Flint and Steel I have made it so that,
you can put 2 pieces of Gravel in a crafting area and it will give you 1 pice of Flint,
and if you put 4 pieces of Flint in any crafting area it will make a Flint and Steel
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So Please download this datapack.
It would mean a lot to me. (I work Hard On These)

Anyway, have a good day/night!