@Det742021 I have set my companies shipping rates to EU based on order value of a max of £130 - if an EU customer tries to order more it will not let them order.
VERY IMPORTANT If you do the above you have to change 2 error messages that Shopify displays (under languages) else Shopify will give the messages that you do not ship to the country they are trying to order from!
Hope this helps as it’s working for us.