Question - How do you advertise yourself online without spending a fortune?
You don’t “spend” on advertising, online or offline!
Whether it’s a “fortune” or a few pennies,?you invest in advertising!
You will only put money into advertising in the expectation of receiving a ‘Return’ on your ‘Investment’.
So stop looking on “advertising” as a cost, start thinking of it as an investment, start testing some ideas, measure the results in order to discover which ideas give you the largest return, drop the ineffective ones, do more of the effective ones - and?you’ll have stopped worrying about “spending a fortune”!