I don't speak much here, but I think people overuse and over-expect tips (in all aspects of society). The whole point of a tip is if someone goes above and beyond what they feel is a "normal" job done, especially if that person works somewhere else where their boss/business/whatever gets most of the money. I used to work in service (not this type) and I would routinely go above and beyond what was expected, but only got tips about once a month. But I never complained, I just budgeted for my salary and viewed tips as "free" money
Anyway, like others have said, if you feel you should get more, then raise your rates and let supply/demand figure out the true worth. If you're worth more, people will pay it, and somewhere there is a happy medium. Welcome to owning your own business
I almost never tip those stupid "tip jars" that seem to have popped up everywhere. If you're at a counter and your sole job is to take my money and hand me food that someone else cooked, no, you don't get a tip.