It appears you are using the wrong ammunition. If you read the users manual you are only supposed to be using low velocity ammunition (sub sonic). Pg27
https://cdn.shopify.com/s/files/1/10...34152949560847
https://www.americanhunter.org/artic...-game-hunting/
I inherited the HP22LR & HP25acp and have had similar results. Cleaning the slide and firing mechanism helps a lot. If you have continued issues or find the firing pin broken, You can mail the pistol to the manufacture in Ontario California and they will repair it for free and mail it back. Phoenix Arms 4231 E. Brickell St. Ontario, CA 91761 909.937.6900
It’s a fun little shooter and a nice pistol to start a reluctant new shooter on.