Deactivate Cloudflare plugin

Hi Support Team,

Here installed Cloudflare plugin in my site and configured it via User account in Cloudflare.
But now I want to deactivate plugin from my site but if I deactivate then site getting crashed and stop working.
Also, I do not know what account configured before in my site so what need to do to deactivate plugin now from my site? Need to create a new account and configured it again?

Can you please let us know how can we deactivate plugin or remove the plugin, is there any different steps for this?

Thanks,
Crish