Fiddles have the same problem. Even college students have an incredibly poor sense of pitch. It's that nature of the animal. An excellent embouchure will make a tone more precise, but it takes time. Trumpets, bones, and french horns have to blow 30 miles of tubing, all in essence by ear. Put your finger on a fiddle at the wrong spot, it's horrendous. Have 27 people do that at once. It's astounding to me horn or brass players exist. They have great personalities, but are gluttons for punishment. A sax made me nearly hyperventilate. This stuff is difficult. I'll just play guitar and piss piano players off. It's more fun.