26M. Is having no previous relationship experience with women a red flag?

So due to various personal reasons (which I don't want to mention here as that will become a post in itself) I've not had any female friends or any relationships. I've only had acquaintances at most.

Recently reading some posts online and speaking to people with dating experience, I was told that having no previous relationship experience is a red flag for women.

So i wanted to know if this is actually true and if it is true, how big of a red flag is it?