Stay with the 9MM if that is your preferred chambering. The panic will end, and the ammo shelves will fill again. Consider as mentioned before getting into reloading. Although primers are also in short supply in some areas.
Although I do agree with a break-in, or as I call it a shake down period before I trust a firearm for carry, I usually accept it's reliability with 100 rounds of range ammo, and a box or two (40-50 rounds) of my chosen carry loads.
Cheapshooter's rules of gun ownership #1: NEVER SELL OR TRADE ANYTHING!