Tile Server setup in more than one language

I have setup OSM tile server setup using https://switch2osm.org/manually-building-a-tile-server-18-04-lts/

I would like to serve tiles in different languages using urls like http://localhost/tiles/0/0/0.png?lang=en http://localhost/tiles/0.png?lang=fr

or http://localhost/tiles/en/0/0/0.png http://localhost/tiles/fr/0/0/0.png

I know I have to make changes to Carto styles and apache config. also If I need to make any changes to store tiles in different language.