Your .380 is the absolute last ditch gun for home defense, everydaycarry and will only piss someone off if they are big enough. You must get the best possible ammo for it. Silver tips are minimum, glaser safety slugs if available and even pellet nose. Put a normal slug first to get through a window of the car if you are being attempted hijacking, have the backup ammo in badass stuff. A spare mag is needed as it only carries 6-8 rounds. If you like small but bad pistols, look for a .32 in magnum. Hits harder than a .38 but does not have the kick on your firing hand so you can get a second round on target FASTER.
If you are good with a rifle, look for a short 30-30 lever action. Does not have the stopping power as really needed but for short distance, with prepared rounds(pre-drilled for hollow points) short enough for in-the-house-use and not a bad kick, you could be happy with it. A lever action is faster than a bolt action and has less problems with loading failures due to the type of ejection of spent rounds.
If you do go looking for a .22 pistol, try to get your hands on a .22 mag that can also handle yellow jackets-hollow points, normal .22 and even .22 shorts for close ups on rats and rodents. A .22 in magnum is devastating from close distance to anything, but will not do anything to a ballistic vest or such. You always aim above the neckline and always practice at face and headshots. Sorry for the truth but you are on a deadly journey with little time for bad lessons and lots of fun if done well with a good trainer beside you.
The rest of your "fun-run" and the stuff you bought--shows you are on the right track!! Live free, Gary