Mostly just through my work but also upwork.com and word of mouth from family friends too.
I work at a screenprint, embroidery and promo item shop. A lot of times clients don’t have a real logo so they have me design some options fir them. Upwork.com is very saturated with competitive designers, so the jobs on there are few and far between. Plus you’re designing logos for way less than they’re worth, IMO.