Migrating both Domain and Sub Domains to my new host

Hey guys!

Pretty new in this and I tried searching for relevant topics but couldn’t find any.

I was wondering what are the procedures like to move my website from a shared hosting to a VPS hosting website.

I have a few sub domains on my root domain that I would like to move over to the new hosting server.

Do I, install All-in-One WP Migration and do it for both the root domain and sub domains. Create the nameservers for the root domain and sub domains and install wordpress in each of them and import them to the relevant domains?

What do i need to look out for when migrating to a different host?

Thank you all for your assistance