Thanks for the advice, not sure that I want to run it more like a business, maybe find one-two clients on side 'cause I have a day job and I'm good with it.
Freelancing always is a business. It doesn't matter if it's run on the side.
While you can outsource aspects such as marketing and sales you should be aware that in that case not only will you be leaving a lot of money on the table (because someone else higher up the value chain will capture that value for you) but you'll be dependent on third parties other than your clients, which means that your freelancing income can dry up at any time.
While you can outsource aspects such as marketing and sales you should be aware that in that case not only will you be leaving a lot of money on the table (because someone else higher up the value chain will capture that value for you) but you'll be dependent on third parties other than your clients, which means that your freelancing income can dry up at any time.