LibreTranslate is an option if you’re looking for something open source.

Bottom of the North

Try askama, it also has a crate to integrate actix-web called askama_actix. It’s jinja like template engine

The journal is the biggest reason I move from Obsidian to using Logseq regularly. There is so much less friction just going to journal and writing ideas rather then figuring out where to add the note too before typing.