Definitely! Don't listen to the folks behind me - Jellyfin can only be viewed outside of your network if you build your own website and host it there, and that's way more trouble than you need to go through. Use Plex instead. You can just download the app and login and view your media from anywhere in the world without having to be a web designer/programmer.
Jellyfin is cool and all, but the functionality is severely lacking compared to Plex. Plex is getting pretty commercial, so I get it, but it just fucking works haha. Jellyfin will hopefully be there someday, but trust me, save yourself that headache. It sucks in it's current form. It's mostly just hardcore nerds that use Jellyfin, and if you're trying to share it with others, it's very complex. With Plex, I can just have my elderly mother or whoever download the Plex app on their phone, smart TV, game console, or anything else with internet and you can cast it just like Netflix.
I use unRAID as my OS, which is a Docker-based Linux kernel. I use Plex, Prowlarr/Radarr/Sonarr for indexing and organizing my library, sabNZBD and qBittorrent to download the files, and Overseerr as a search engine and request system for movies and TV. Basically I've got Overseerr reverse proxied and myself and all of the folks I share my Plex with can access it and request stuff from any web browser.