To be honest, your biggest limitation is going to be your mindset, not your age.

The fact that you can't see a path forward for yourself and using phrases like "execs who had no interest in leveling me up" (hint: it's your job to do that) and "I was a moron", does not bode well for your chances.

You're going to have a hard time getting hired if this is the attitude you project, and you're going to have a hard time improving yourself with the negative mindset you seem to have adopted.

I know it is cliche, but you need to adopt a growth mindset (Google it, it is a thing)