Why can't I deploy my next.js app to port 80?

Question

I never deployed any project before and I'm currently running with an issue while deploying a next.js app to godaddy. I uploaded my next.js app to the public_html folder of my cpanel and then i connected through ssh and executed the npm run dev command with server.js pointing to my domain name as hostname and 3000 as port number however, to access it i will have to write in the url www.mydomain.com:3000 . I learned that in order to access it by the following url www.mydomain.com I have to specify port 80 in the server.js file. However, when I do so and run the npm run dev command it says that I do not have the permission to port 0:0:0:0:80 Screenshot here

I have a VPS server and a domain name. I am doing something wrong or is there something I missed? Should I not use my domain name as hostname in the server.js file? Should I maybe keep the hostname as my VPS ip and port 3000 then point my domain to read from this address? I am a beginner with no previous exprience in deployement and this is my first next.js app ever.

Any help is appreciated and thank you!