What did you do?
When in an interview, when you're asked a question about your past experiences, the larger the library you have to draw on, the more likely you are to find an example that's relevant and persuasive. Even questions of the form "How would you deal with [hypothetical scenario]", I encourage applicants, if possible, to answer it in the form of "Oh yeah, that's interesting, we had to deal with a very similar case at [one of my previous jobs], here was my approach towards it".
After each interview, do a "l'esprit de l'escalier" retro, write down all the questions asked, what your answer was at the time and what you would have ideally answered now given the fullness of time to think about it. If there's a significant delta, that's a sign to go back and prepare more until your "real time" performance approaches your retroactive performance.
It worked, after 4 years of studying I landed a SF job and 6 months later I was at Apple, year after that I was at Netflix. You get out of this life what you put into it, and in software it’s all out there for you to get. You don’t need a degree, you don’t have to pass the bar or boards, you just need to prove yourself and be willing to hustle
Edit: I saw other comments. I am both “old” and I have a mechanical engineering degree (not CS) and I do just fine interviewing with startups. I worked really hard at the practice of interviewing, this has more rewards and lower risk than basically any other skills you can learn so invest it.