I advertised from linkedin and my websites. Upwork is bad. You would need to do some nearly free work for awhile to get some ratings and a 'rising talent' rating, to start to be considered for work.
Once you work for free for a few weeks you might start to get some traction but you'll quickly run out of "connects", that allow you to bid for proposals. Basically you have to pay upwork to apply to gigs, and then upwork takes a cut if you get the gig, and most the gigs posted want to pay offshore rates, eg 10 - $30/hr for AI work, or skilled software engineering.
I tried advertising as a consultancy, after an exceptional career in tech.
* Client emails me asking if I can help with his site. I respond. He asks for more details. I respond. He provides a website with an MLM video on how to "be your own boss and sell a product that sells itself". I was talking to a bot.
* Try upwork. Spend all day to send 15 proposals, get 3 views, no replies. Upwork wants me to pay money monthly for more "connect" points. Looks like you need to do work for nearly free to get ratings, and you're heavily competing with offshore. close tab ... Try fiverr. Get no messages.
* Startup with revenue contacts me, shows me their business, discusses their problems, seems very interested in hiring. Offers $20 - $30 an hour for Cloud security work; software engineering, seems price sensitive to the extreme, doesn't seem to want want to pay for any time spent reviewing docs/analysis, only wants to pay for the execution time. Say no. Guy keeps calling. Guy agrees to higher rate for a tiny amount of hours to be done next-day. Guy doesn't give access, asks to review more stuff. Wasted many hours for no money.
Lesson learned, try to find a fast growing company and stay away from people that sound like they would negotiate on the price of corn kernels in the back alley of aldi
Once you work for free for a few weeks you might start to get some traction but you'll quickly run out of "connects", that allow you to bid for proposals. Basically you have to pay upwork to apply to gigs, and then upwork takes a cut if you get the gig, and most the gigs posted want to pay offshore rates, eg 10 - $30/hr for AI work, or skilled software engineering.