next/link should be able to cover most of your routing needs, but you can also do client-side navigations without it, take a look at the documentation for next/router.

The following example shows how to do basic page navigations with useRouter:

import { useRouter } from 'next/router'

export default function ReadMore() {
  const router = useRouter()

  return (
    <button onClick={() => router.push('/about')}>
      Click here to read more