I have tried out loki, too. But I was not satisfied because you have to run an extra server for it. I have only a very small app so I was searching for a much simpler solution and found https://goaccess.io/ . The nice thing is that it is very flexible (you can pipe your logs in command line, but also run as a server) and if you are using standard tools like e.g. nginx or apache, the setup only takes an evening :)
It is always a question of complexity and how much time you want to spend :) At first I used Multitail to peek into server logs via ssh. Then I switched to GoAccess and if you really have a greater infrastructure I would maybe switch to Loki or ELK.
I've used GoAccess in the past, but didn't find it a good fit esp. since I prefer JSON logs. I don't know if it supports this - maybe I didn't read enough docs - but at the time, I remember it was easier to spend an hour whipping up a tool in Go that did exactly what I wanted.
As for loki, it's a separate server but the setup takes maybe 10-30 minutes of reading some docs, maybe changing some config files and the systemd unit file to keep it up and running is less than 10 lines (most of which is boilerplate).
Of-course I have the benefit of a client library so I can just call a function on a struct at the end of a request with no need to worry about serializing the relevant data into some predetermined format, compression, etc.
Here are a few more monitoring tools listed https://turtle.community/topic/monitoring
It is always a question of complexity and how much time you want to spend :) At first I used Multitail to peek into server logs via ssh. Then I switched to GoAccess and if you really have a greater infrastructure I would maybe switch to Loki or ELK.