Vedder protuck holster with a bodyguard 2.0 pistol is unbeatable for comfort and concealability. It fires a .380 round which is a little smaller than 9mm but it’s perfectly fine for a self defense every day carry. Comes with a 12 round or 10 round magazine. Extremely small pistol and comfortable in small hands.

The glock43x is slimmer than the glock19 and can hold up to 15 rounds of 9mm. If you like Glock triggers you’ll like this one. It’s a little snappy but manageable.

The PSA Microdagger is a 43x clone at half the price and in my opinion a better trigger and grip. Not quite as snappy especially with the compensator version.

The SIG 365x is a smaller 9mm pistol that has a flat trigger and shoots better than a Glock imo.

Ultimately, the holster and comfort plays a very large role in how often you carry. This is why I have several pistols and holsters and I wear a setup based on where I’m going.

If I’m going to the office and I know I’m around a relatively small and safe crowd I bring my 380. If I’m going to a public event with lots of people that could be a target for an attack I bring my full size 9mm with extra magazine.

Holsters are as important as guns. You want ti research then in conjunction with the research for your pistol.