I worked as a shop clerk in a major department store. That was good. I wouldn't suggest any kind of food related job. Usually way too stressful.
But other sorts of retail is good. I worked as a computer operator 3rd shift, which was good. I also operated the sorter at a bank. No body but me and the other operator. Both too busy for much except doing our jobs, maybe take lunch break together. No interaction with bosses unless something major happened. So perfect. No customers to deal with either.
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"All those things that you taught me to fear
I've got them in my garden now
And you're not welcome here" ---Poe