You said no .22 LR,,,
Try a revolver in .38 Special or .357 Mag (so you may shoot .38 if you so choose),,,
You already have the most inexpensive caliber for semi-autos,,,
.38 Special is probably the least expensive ammo for a revolver,,,
It's only a bit more expensive than the 9mm stuff you feed your semi.
But I do think you are missing out on a lot of good fun,,,
As well as productive trigger time by not considering a .22 of some type.
I love shooting and actually practicing with my medium and large bore handguns,,,
But with the price of ammo these days I would not be able to enjoy shooting as often as I do without my Double-Deuce guns.
Just a thought,,,