Your ability to explain new and/or complex ideas well, is predicated upon your ability to express simple ideas: Ironically, the newer or more complex an idea, the more it requires reference to simple, childlike, playground metaphors.
You’re not nearly as good at your native language as you think you are. You just don’t realize it. If you want to be understood, speak less “accurately”: it’s like rain on your wedding day. Use the simpler, more natural, more native phrasing that communicates 80% of what you want to say; don’t aim for some 100% that will just confuse, won’t be reached and isn’t worth reaching for.