Only issues which are in the last column on your board will be considered done by the Scrum board. And therefore any ticket not in the last column may not count towards burn up/down reports.
Tickets waiting for review/QA may linger around for long and due to bottlenecks and aren’t completed by the Sprint closing time.
Are QA and PR review being considered when a task is estimated? Common trend: QA bottlenecks towards the end of the Sprint.
Infra requirements - e.g. setup new clusters, procurement of services, etc - may lead to delays and therefore they must be brought up to the attention of a key stakeholder as early as possible before they become a blocker.