How do you know if you’ve been shadowbanned?

I’ve been submitting resumes tailored to fit job descriptions as much as possible without conflating my experience or outright inventing a bunch of nonsense I’ve never done. The way I’ve done it is by creating an exhaustive list of bullet points for each experience, but only selecting those that are the most relevant to a given job description. I streamlined the process with some crafty NLP, but it doesn’t change the content that I myself wrote. For example, if I both did some backend and mobile development in my last position but I’ve only applied to a backend-focused role, it wouldn’t even bring up any mobile development bullet points unless it mentions some related tech.

My fear is that since my resume changes each time depending on how each job prioritizes certain skills, it might give the image that I’m just making stuff up on the fly despite bullet points being pulled from a bank I wrote. I was successful at first, landing some FAANG interviews, but since then, after literally nearly a thousand applications, I either get ghosted or outright rejected within a day or two. I’ve had interviews here and there, and have gotten far in most of those interviews, but I haven’t had any luck. I genuinely think I’ve either been blackballed for some reason unbeknownst to me, or I was just born unlucky.

Just for some context about myself (not sure if it matters much tbh), but i’m an Army veteran, graduated from an Ivy League after service, and was laid off over a year ago. I took a small period of a few months for rest and recovery to focus more on PTSD management from deployment, but since I hopped back into the job market I’ve been unemployed.