Question: A coin that is mined through transactions?

Would it be possible to have a crytocurrency that would be mined through people performing real life transactions, maybe with a debit card or something? So rather than being a proof of work or proof of stake, it would be proof of use.

My knowledge is limited but the idea just popped into my head and i was curious if this could even be a thing? Feel free to shoot holes in this idea and point out how dumb i am (with explanations please) :-)