+1 to the 1911 in 9mm. The biggest obstacle in becoming a proficient (or "good") shooter is cost. .45 ACP justs costs more than 9mm, sometimes almost twice as much. Shoot more, get better.
That's why people were trying to steer you into .22 LR. Whatever its shortcomings are, it still takes all the fundamentals of firearms to make a shot with a .22 LR, and you will get to shoot A LOT for a lot less. My first few pistols were all .22 LR, and got to put 10,000's of rounds through them, often shooting them to failure. Shooting centerfire is a slightly different beast when it comes to recoil, but if you are beginning shooter, it's probably better to start with .22 LR in a semi-auto, just so you can develop good shooting habits and not develop any bad ones, like flinching...
...especially flinching when reaching for your wallet every time you shoot off a box of 50 for $20-$25 of .45 ACP FMJ's when you could be shooting even "expensive" .22 LR like CCI Minimags for $7 per 100. That's 300 .22 LR shots per 50 .45 ACP. Since practice makes better, a cheaper cartridge will mean you will get better, and you will have more FUN, because shooting a lot is FUN.
Go to Walmart (or similar big box, discount store--here it's Walmart of Fleet Farm) and compare ammo prices. Look at the cheapest .45 ACP, 9mm, and .22 LR. See what you can afford to shoot, then buy your gun accordingly. In my opinion, it's better to spend an extra $100 to $200 more on a gun that shoots cheaper bullets, because you will get to shoot that gun all the more. I have taken this philosophy, to an extreme, because I spend waaaaaaaay too much on my guns and only buy the cheapest calibers to shoot.
It may be tempting to "get man's caliber" and go "full-American" by getting a .45 ACP, and there's nothing wrong with that. Just don't feel like you have to. I assure you, all bullets are dangerous, and you will be well served by whatever quality firearm you choose.