Some years ago I owned a Beretta 84 and an AMT Backup. And carried them a lot.
Each winter the kids would ask what I wanted for Christmas.
My answer was always the same, "Ammunition".
This was in Alaska and I had been stuck in the house because of extreme cold temps. So a few days after Christmas I headed out of the house with an armload of mixed brands of new ammo.
It was 15 degrees below zero when I hopped out of the truck with a pistol in each pocket of my parka.
In the gravel pit, someone had set up and shot a large laminated particle board that was about and inch and 1/2 thick. So I decided to use their target.
After each shot I noticed a strange noise. So I changed guns, then changed ammo. I was hearing a bang then a whrrrrr.
Inspection of the board showed the bullets we not penetrating but bouncing off. It was a good thing I was not facing the board straight on. The ricochets were flying into the woods rather than straight back at me!
Cautiously, I pulled out my 9mm and fired a couple shots. Full penetration!
I traded both 380's shortly after that.
Now, maybe the extreme cold temps had something to do with the lack of penetration. Maybe the materials in the board had something to do with the lack of penetration. But maybe, just maybe, the wimpy 380 load had something to do with it?
Whatever it was, the 9mm worked and I can conceal a 9mm anywhere I can conceal a 380.
I see little use for a gun that is the same size and weight of a 9mm and shoots cartridges that cost more than 9mm but have less power.
My advice is, get a real gun.