That depends, some people need to be offended and get a reality check.
Otherwise just muttering imprecations jnder your breath against humanity at large will get you through the day.
There are many different minimum wage jobs out there. Speaking as an introvert who has had several of them, if small talk is that taxing for you then you should consider a job with less intrinsic social requirements.
i was a barista for well over 10 years (as an introvert to boot). it's 100% a side gig. it may cover some food and gas, but NO ONE is paying rent with barista pay, especially since they cut labor every time it's "slow" for 20 minutes.
i stayed there because of the free pound of coffee every week and flexibility, but don't act like it's always the only thing between the workers and homelessness
on the one hand, victim blaming is bad, and we shouldn't do that. On the other hand, there isn't a shortage of bullshit dead end jobs that don't require previous experience, so you can absolutely get a job that is more or less customer facing if need be.
I definitely feel like there's a correlation between jobs being entry level and being customer facing. Also in many jobs of any level you still have "customer management" even if that customer can take different shapes than the usual retail crowd, but that's not always a good thing.
Restaurants have kitchen staff. Retail has merchandisers and night crew. I'm sure I can come up with more if I put any effort into it whatsoever. I'm not saying that customer facing jobs aren't the majority of entry level positions, but they're far from all of them.