Not knowing something is not a reason to not do something.
The people that use this as an excuse are the ones that don’t achieve anything. They take the easy way out by saying they don’t know. They don’t know how, they don’t know where to start, they don’t know what to do.
Elon Musk didn’t know how to launch a rocket when he started SpaceX. Now, he launches rockets all the time and has built one of the most successful rocket companies in the world.
He didn’t let not knowing be an excuse. So, he read whatever books he could until he understood rockets and how they work. Then he was able to start to form his own opinions and desires on how he wanted to do things so he was able to talk the same lingo as all the rocket scientists that he hired.
If you don’t know, you have the power to change that. You can read, learn and seek help until you do know.