Given the focus on privacy you might be interested in connecting with Bugsink[1] also (Self-hosted Error Tracking, Sentry API Compatible). Feel free to reach out.
----- disclosure: as implied by "feel free to reach out": I'm Bugsink
----- disclosure: as implied by "feel free to reach out": I'm Bugsink
In the about page. I do agree Sentry self hosting can be a nightmare
https://www.bugsink.com/blog/why-i-gave-up-on-self-hosted-se...