How to disable cloudflare caching?

Question

cloudflare

There is a site on html which has dynamic js. Everything works perfectly without cloudflare. When connecting cloudflare, there were problems with caching. How to completely disable caching?
Maybe there are analogues in which you can completely disable caching.
Z.Y. The site is subject to constant DDoS attacks, so it was customary to use this service. The attacks are so powerful that even a seover with a huge channel does not pull out.

Answer 1

Сaching - Development Mode ON (disables caching for 3 hours)
Then Purge Cache - Purge everything