There isn’t a reliable connection to King Solomon. The magic symbols attributed to him or connected with him are products of medieval legend. People in the Renaissance and later wrote books of so-called “magic” spells and symbols and attributed them to him. A lot of the “sigils” of today were made up by 20th century occultists.
So basically you just have a whole bunch of people convincing themselves they can do magic through drawing designs. It’s ridiculous. And has nothing to do with King Solomon.