If you want the job (of finding leads, and finding jobs) done right, hire a professional -- a recruiter who will charge a fee and is aligned towards you finding a job. Trying to cold-apply to every single job with a spray and pray approach is about as fruitful as cold calling every company you can to sell a product which may or may not apply to them. People hate middlemen until they use non-curated marketplaces with low quality or outright fake inventory. Then they begrudgingly realize why the middleman came into existence in the first place.
Make peace with the middleman. Find the competent ones and build relationships with them. If you do that, you may not always have the best job in the world, but you won't be so woefully out of touch with reality that you write a blog post like this blaming something that's clearly a consequence of your own actions on the rest of the world.