Earlier quoted context omitted.
Despite the "Azure" name, Azure DevOps Server (formerly Team Foundation Server), is still a rock-solid on-prem system for git repo hosting, issues/stories/projects, build automation, and the rest - though I feel it has stagnated somewhat, and git integration still feels half-baked compared to TFS's previous SVN-clone, but is still my first-choice for on-prem installs (granted, I'm still wedded to the MSFT stack).
ADO is the death knell to collaborative modern teams. Who the f wants to waste their day with that UX and feature set?
TFS' UX is hardly any worse than Jira's.
BTW, if your complaint is based on your personal experience dealing with hideously complex Issue/Bug form-fields, "areas", and the like, then that's not so-much an issue with TFS/AzureDevOps, but with your PMs, who are the ones responsible for applying customizations to the built-in workflow forms. The stock workflow forms/fields are a (relative) breeze to use compared to Jira, IMO (but GitHub Issues+Projects are better, I agree).