being notary sounds like a super easy job

It is, which is why basically nobody is only a notary. It's like being CPR certified. Great, but your day job is gonna be something else.

If you look up where notaries are in your state database, they're in places like law firms or banks or insurance companies, where their day jobs are something different (paralegal, bank teller, locksmith, etc.), and where they can sign a few documents for $20 and record it in their ledger.