I'm kind of in the same boat, but I have some work from a long-standing magazine publisher which has turned to website content, etc. Aside from that, I've tried sites like Upwork and the problem is the ridiculously low rates being offered, exacerbated by applications anyway from people based in India, the Philippines and so on where those rates actually constitute a reasonable wage. Any good jobs are swamped with applicants. Sites like Fivr don't help.
It's a tough gig. LinkedIn has occasional, genuine jobs advertised. Your only choice is to keep flogging away at these sites, but be prepared to dismiss a vast majority of the gigs being promoted. Good luck!