Before I touch on anything, I just want to say that the statement of yours at the very bottm of the post that I've bolded, may be the most truthful thing I've ever read in my life and I am in no way being facetious and I don't think it is hyperbole either.
I would say first and foremost, it is a numbers game when it comes to applications. When I landed at my current organization (where I have now been for 9 years), I was in a rut. I worked at a small company, where I was vastly underpaid, completely in over my head, but was obtaining great experience.
I had a background in recruiting and so when I decided to look for a new role, I thought it would be easy. I mean, as a former recruiter, I should be able to find a job with ease right?
After two months of applying for roles, I remember sitting at my desk, feeling hopeless. It was actually
@Megustaelhockey who came to the rescue. I was texting him because I was borderline depressed (which, if you knew me, I'm one of the most optimistic, glass half full, positive people) that I had not received so much as an interview request after all the applications, all the resume tweaks to ensure my profile aligned with the job posting, all the networking on LinkedIn and elsewhere to try and get my resume directly in front of a hiring manager...
And that is when he reiterated to me that finding a job comes down to two things: either levying a connection you know or just blasting out as many applications as possible. He told me to stick with it and to not stop. So I didn't. I kept applying to everything that I was remotely qualified for and you know what? Nothing happened. But it was ok. Because he and others were there to support me and keep me buoyed... which is my way of saying ensure you have a good support system.
However, two months later, as luck would have it, I had three interview requests in a f***ing week, which ended up in two offers. Numbers game for sure!!!
Stick with it. It may not be easy. It may be difficult. But don't stop. You will find something. Dealing with the unknown after having so much certainty and stability for 20 years, that is the hardest part. The fear of "will this be my reality until I retire"? It won't be. It is a speedbump.
Also, don't blame yourself for feeling complacent in your last role. There is nothing wrong with being happy in a spot, especially if that spot affords you a solid paycheck, good work life balance in terms of keeping up with health and family, etc. That is more than most people get.