this is how I destroyed my career in IT and how I'm headed to a bleak future.

I've spent the last 10 years working at a small company developing a web platform. I was the first developer, I covered many roles.
I worked like crazy, often overtime. I hired junior dev, people left and came. We were a small team.
I was able to keep the boat afloat for many years, solving all the technical problems we had. I was adding value to the company, sure, but not to mine professional career.

There was a lot of pressure from young developers, from CEO, from investors. Latent disagreement between the COO and the CEO. I was in between.
Somehow, the trust I built in 10 years, helping people and working hard, was lost.

There was a merge, development was outsourced, the small team I hired was kept for maintenance and I was fired, without obvious explanations.Well, I was the oldest and the most expensive.

Now I'm 53, almost one year unemployed.
I'm a developer at heart, but obsolete. The thing we were doing,
were very naif. I tried to introduce many modern and more sophisticated software concepts. But basically it was still pure java with some jquery. No framework. No persistency layer, no api, no frontend framework. It just worked.

I moved everything to AWS in attempt to use more modern stack, and improving our deployment workflow.
Yes, but I'm no devop. While I know about CD/CI, I didn't set up one.

I know a lot of architectural concepts, but I'm not a solution architect.

I tried to explain to the team agile. But I'm not a scrum master.
I introduced backlog management, story mapping, etc. But I'm not a product manager.

And before that? I led a team once, for one year, part of a bigger project. I can create roadmap, presentations, planning, reports.
But I'm not a project manager.

I worked a lot freelancing.
Now I'll be useless at freelancing. Yes I understand Angular, react, Spring etc, I'm studying a lot. But 0 years of experience.
As a developer, I'm basically a junior developer.

I can't easily "downgrade" my career. I wish. I'll take a smaller salary. I'll be happy as junior dev, I've a lot to learn.
But they'll think I'm overqualified, that I'll leave, so they won't hire me even for senior dev. Or that I won't fit in a 25 y.o. team.

My leadership is more by "example", servant leader or something like that. I build trust when I work with somebody, not during a job interview.

On top of that, due to having worked in many foreign countries, and freelancing, my "pension plan" I won't be able to collect anything. I've just some money saved for one year or so.

I'm 53, unemployed. In few years time, if I don't find anything, it will be even harder to be employed.

I think I'm fucked

When you have just made a new feature and you rebase to master, and the project won't compile because someone else pushed something which doesn't work...