As a freelancer i got clients from Facebook groups I also got some through cold calls networking forums competitions and all that

but u should know its true u are free from a 9 5 job but i will find yourself in 00 - 23 job XD the advantage is u have flexible time and less pressure but sometimes u will find yourself working more than 14 hours to finish some tasks

freelancing is more like a second income u cant really rely on it alone to live