Hi,
Sadly there is not much the plugin can do about that, it’s more a thing on Cloudflare’s end. It’s likely that something on your end is being flagged as suspicious by Cloudflare so you are occasionally being failed/challenged more often. It could be related to your location, IP address, device, or maybe VPN if you are using one.
You could post on the community forums here if you want to discuss this with Cloudflare: https://community.cloudflare.com/c/website-application-performance/turnstile/83