John Moses Browning invented the .32 ACP and the .45 ACP. He chose the .32 as his daily carry gun. Good enough for him, good enough for me.
JMB invented the .380, also. Still chose the .32 for carry. My Kel-Tec P32 disappears into any pocket. With 73 grain FMJs, it will do its job quite nicely if you do yours.
I agree, carry the PP Walther it can put 5 rounds in a quarter size target at 15 feet. Shoot for the eyes, they can’t see they can’t fight! 8+1 is all you need. Browning was ahead of his times.