Some users in countries like Syria are complaining about the website being extremel

Some users in countries like Syria are complaining about the website being extremely slow and unresponsive, to the extent that they try to access the site for an entire hour.

You can check your cache ratio in your Caching/Overview tab to see the cache ratio.

If it’s mainly served by your origin, you can increase the cache ratio by creating a Page Rules with Cache Everything & Edge Cache TTL Create Edge Cache TTL page rules
You can read more about Default Cache Behavior.