Yes, I just edited my post, adding cornet, it's also mellower than the trumpet. Being an adult, our face muscles have matured, so it's more difficult to learn and control a "new" embouchure for strength, endurance, and accuracy than when we're kids. I tried learning flute as an adult and gave up because getting the embouchure was too much work, and frustrating.
I played bugle in the Boy Scouts, so I learned brass embouchure...on a very small narrow mouthpiece. In 8th grade our school got two new sousaphones, mouthpiece was larger than the size of a shotglass, I enjoyed playing it, same for other instruments the school had.
I used to carry my bugle mouthpiece everywhere and could practice the different exercises conveniently
When I played alto sax in school band, we sat in front of the trumpet section, and there were always several trumpets, and trumpets are very loud and piercing - this one MF'er, our school's best (and loudest) trumpet player would often lean forward and play closer to my ear, it was painful pissed me off that I nearly punched him a few times IIRC. We were often competing for solo spots.
Kid was a real prankster, I remember in one concert, he took a wad of gum and threw it, and it hit an oboe dude in the head, and got stuck in his hair and he sat there on stage for our full concert, they had to cut it out of his hair and he had this big bald spot...fun times.
When I played tenor and baritone, I sat in front of the trombones and baritones, I formed my first paid gigging band with one of the trombone players who also played bass guitar.