How to hide ship to a different address fields of the field is unchecked?

Yes!
There is a plugin that will give you a choice to disable this BUT I will caution you. If you use a payment gateway like Square Up it will disable the payment gateway. As long as you’re using a payment system that doesn’t require BOTH the shipping AND the billing to be filled out by your customers, then you can use a plugin like
Woocommerce check out

https://www.ads-software.com/plugins/woocommerce-checkout-manager/

good luck!