heyitsritesh first thing enable redis at cloudways* dashboard settings
secondly, install gb redis setup , gb redis will take of settings you need not to do manually like mentioned at https://discuss.flarum.org/d/27455-gb-redis-setup/4
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if you install gb redis setup and not enabled redis at cloudflare i recommend removing gb setup first then enable redis at Cloudflare dashboard > restart instance > goto flarum folder and install gb setup again
composer remove glowingblue/redis-setup
heyitsritesh But there is no activity in the redis-cli monitor. It is stuck at OK
to stop Redis monitor you need to hit ctrl+c
let me know once you done these changes. (i am not expert but this is what i have done)
edit: i thought of recommending Redis you personally in the other discussion and thought it could be off topic
once i have enabled Redis at the server level (configured it to wrodpress too (my root domain in wp)) I see 20% increase in traffic and a huge increase in loading experience, i have seen a spike in webmaster tools too