(Discussion) www or non www which is best? which one you use? ((SEO Secret))

hi my blog is on WordPress.. and i am using www. myblog .com ( example)

when someone type myblog.com it opens with www. myblog .com ...

..
but i think now a days 90% people dont put www while typing the url..

so my question is which one you use? www or non www url? which will be better for seo ranking?

yesterday i have changed my url to non www.

(like backlinko, ahrefs using non www)

(Extra question - after Changing www to non www My site is not opening because of to many redirects... so i pause clpudflare for sometime.. now its working fine.. i am worried if i enable clpudflare the problem still occur)

there's no difference for SEO, neither in any other aspect,
for the cloudflare problem, you messed up some configuration somewhere,
check the DNS records, htaccess rules, SSL rules, wordpress settings, etc...
also, make sure to flush the cache both in browser & cf and if you're using OLS or LS, reboot the app