Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
SharePoint Stack Exchange is a question and answer site for SharePoint enthusiasts. It only takes a minute to sign up.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Is it possible to set a modern look as default for sites to an intranet that is already created?
Based on my understanding, you are tying to make your Modern page as a Landing page for your intranet portal, if yes. you can navigate to site content -> site pages -> select your modern page and on ribbon click command bar and click make Hompage.
Required, but never shown