Rewriting an existing text in British English

My text consists of 7500 words. It is a text generated by CHatGPT. This is now to be rewritten by a human. Important: No machine tools may be used for writing. Of course, the text should be proofread by a proofreading software, but no text modules may be rewritten with ChatGPT or other AI tools. 100% human written. I need this within 7 days. A sample text is attached here:

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Chapter 1: Introduction
The COVID-19 pandemic was not only a global health crisis but also a severe external shock to national economies and labour markets worldwide. In this context, the response of public institutions, particularly labour market authorities, was crucial in mitigating the economic and social impacts of this global crisis. In Germany, the Federal Employment Agency (Bundesagentur für Arbeit, BA) played a pivotal role in stabilising the labour market through the introduction and management of emergency measures such as short-time work (Kurzarbeit), aiming to prevent mass layoffs and economic downturn (Bundesagentur für Arbeit, 2021, pp. 23-29).
The purpose of this paper is to critically analyse the leadership and strategic decisions of the BA during this external environmental crisis, focusing on how these decisions affected the organisation's effectiveness and adaptability. Additionally, it will explore the lessons learned from these decisions for future crises. The analysis is complemented by an international comparison of similar institutions' responses in the UK and the US (Scholz, 2020, p. 781).
Research Questions:
1. To what extent did the leadership of the Federal Employment Agency influence decision-making during the COVID-19 crisis?
2. What strategic measures were implemented to manage the crisis, and how successful were these compared to international approaches?
3. What long-term impact did the crisis have on the strategic orientation of the BA?
This study contributes to current research on crisis management and public administration by shedding light on the challenges and successes of the BA during the COVID-19 pandemic (Christensen & Lægreid, 2020, pp. 615-617). The international comparison further provides a deeper reflection on how different institutional frameworks and leadership cultures influence responses to external crises (Christensen & Lægreid, 2020, p. 616).
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Simon