You should take a look a this website below

If you’re coming from pfsense, opnsense will be your best alternative

Lots of good articles to begin with opnsense : https://homenetworkguy.com/tags/opnsense/

Look at using docker, one of the tool that would help you the most is Portainer

https://mariushosting.com/synology-30-second-portainer-install-using-task-scheduler-docker/

For media sharing : Plex and Jellyfin are the most used, there is Emby too. you can try and see wish one suits you the most.

And u/thekrautboy already mentioned : https://github.com/awesome-selfhosted/awesome-selfhosted

Photo/Video editing would be limited due to the cpu on the machine so be aware :)

Have fun !

You should review the new docker compose file, there have been some changes on how the app is built, there is no need for frontend and api anymore

there might be some breaks during the migration, be careful

https://nightly.mealie.io/documentation/getting-started/migrating-to-mealie-v1/

Network Mvl External: true

Should be at the end and on the left like the storage part, that’s what’s blocking