For a long time, many people have said that my years of experience make me valuable so that I should have gotten offers very quickly, but the reality hasn't shown that. Heck, even the founder of the startup company has told me, when I asked for his reference, that he was "very confused" that I haven't found any work for so long. And that was only a year in.
He unfortunately can't give me work anymore as he's tied up with his business. He did consider me for a follow-up freelance job before, but that was more due to a technicality that they needed a US developer for a particular job.
After being evaluated on mock interviews, turns out I'm in the peculiar situation where I am too underqualified for my years. But at least I have some experience working remote that should make me more appealing to employers.
I just can't call it impostor syndrome anymore if I consistently fail at getting full-time offers even when the economic climate was good.