Niche question but does anyone else struggle with making the words in their head come out of their mouth?

I don't know if it's a processing delay or what, but for as long as I can remember I've been telling people that what I'm saying out loud probably isn't being explained right but that it makes sense in my head.

In my head all the words are there and form complete sentences. I can think of enough words that my idea or whatever it is makes sense, but all of those words don't come out of my mouth. Like I have the vocabulary and think of myself as someone who can articulate well, but I can't convey what's in my brain to other people with words.