Welcome to the club 👍
I’m well aware of thisA 9mm is certainly cheaper to shoot than a .45.
If it could only shoot 7 rounds without jammingLOL, then the best option is a Desert Eagle .50 call. Mags are a bit small, at best 7 rounds.
Maintenance is always the key.Of the few handguns owned, several makes and models, not one over thousands of rounds ever jammed.
Kimber, CZ, STI, Caspian, and a few more. Yes cleaned after every shoot, extractors replaced annually plus hammer and recoil springs + magazine springs. Mags cleaned every month of powder and dropping into dirt.
Trigger spring on CZ were replaced as well as firing pins. All used in competitions and only used reloads, 9mm+pp and .38 super, major P/F
Always shoot in first 1000- 1500 rounds. All my pistols sold after 4 years, except my CZ, Czechmate, 11 years old now still has original barrel.