You don't have a logging stack? You should set one up, it helps greatly to see your servers long term snd short term status at a glance, especially if you hook it up with grafana to visualize. You can even use grafana with Home Assistant, and do some pretty crazy things with notifications, but i must say, it is a rabbit hole, especially grafana, and quite a large one at that.
I'm currently using grafana with loki and looking to set up notifications with ntfy but if you have the resources you could set up some other logging stacks like elk, or greylog but they're a bit resource hungry and you dont seem to have too many services set up to warrant a larger stack.
Anyway you have a really nice setup, good job!
Edit: typo
Sorry for the late reply. I followed a great tutorial on youtube by Techno Tim, it explains everything pretty well. It's a bit long, but thorough.
I used this docker-compose file as a base because it connects loki automatically, but you have to add the volumes manually and its not too hard to connect it manually. You can just use the one that Techno Tim uses in the video if you want less complexity in you're compose files.
My docker compose file for reference:
Sorry if the formatting looks bad, since I'm on mobile. I use frontend as a network that includes containers that connect to nginx proxy manager. Edit: Better wording