Selfhosted Jira alternative - tchncs

In my day job, we use Jira to manage our software development projects. For various things at home, I would also like to use a ticket system, And while I wholeheartedly hate Jira, compared to the open source alternatives I found, it is still the best system. Is anyone aware of a good alternative that provides a good backlog view, a Kanban board, and the possibility to group tickets together in epics and sagas?