you're looking to implement localized routing in a Next.js application, next-i18n-router from the next-intl ecosystem is a great choice. Here's a basic example of how you can set it up using a routing.ts configuration.

Check my example

// routing.ts
import { defineRouting } from "next-intl/routing";

export const routing = defineRouting({
  locales: ['ro', 'en'],
  defaultLocale: 'ro',
  localePrefix: 'as-needed', // other options: 'always', 'never'
  pathnames: {
    '/': '/',
    '/blog': '/blog',
    '/contact': '/contact',

    // Services
    '/servicii/creare-website': {
      ro: '/servicii/creare-website',
      en: '/services/website-creation'
    },
    '/servicii/dezvoltare-aplicatii': {
      ro: '/servicii/dezvoltare-aplicatii',
      en: '/services/mobile-app-development'
    },
    '/servicii/design-si-prototipare': {
      ro: '/servicii/design-si-prototipare',
      en: '/services/design-and-prototyping'
    },

    // Marketing subpages
    '/servicii/seo': {
      ro: '/servicii/seo',
      en: '/services/seo'
    },
    '/servicii/copywriting': {
      ro: '/servicii/copywriting',
      en: '/services/copywriting'
    },
    '/servicii/social-media-marketing': {
      ro: '/servicii/social-media-marketing',
      en: '/services/social-media-marketing'
    },
    '/servicii/branding': {
      ro: '/servicii/branding',
      en: '/services/branding'
    },
    '/servicii/creare-logo': {
      ro: '/servicii/creare-logo',
      en: '/services/logo-creation'
    },

    // Portfolio
    '/portfolio': {
      ro: '/portofoliu',
      en: '/portfolio'
    },
    '/portfolio/audit-seo-automatizat': {
      ro: '/portofoliu/audit-seo-automatizat',
      en: '/portfolio/seo-audit-tool'
    },
    '/portfolio/[slug]': {
      ro: '/portofoliu/[slug]',
      en: '/portfolio/[slug]'
    },

    // Author pages
    '/author/[slug]': {
      ro: '/autor/[slug]',
      en: '/author/[slug]'
    }
  }
});