None of what you are saying is true, and it is clear that you have no idea how trade works.

The EU and the UK already have a trade deal. It is called the World Trade Organization rules.

Yes, some taxes and tariffs might be higher, but it is a complete lie, born of either ignorance or maliciousness, to claim that a country would literally starve to death.

Once again, go look up the WTO trade rules. WTO trade rules cover most of the world.