Spikes in Engagement Time from Specific Country in GA4

Hi there,
I hope this email finds you well. I am writing to seek assistance regarding an issue we have encountered with our Google Analytics 4 (GA4) data.
We have observed spikes in engagement time metrics, specifically registering as 0, originating from users in particular country. These anomalies have raised concerns regarding the accuracy of our analytics data and potentially point to underlying issues with our Cloudflare setup.
Could you please advise and provide any insights or recommendations on how we can address these fluctuations in engagement time? Additionally, we would appreciate any guidance on optimizing our Cloudflare configuration to ensure accurate data tracking in GA4.
For the reference, I have attached screenshots illustrating the observed spikes in engagement time.
Thank you for your attention to this matter.