IMHO it isn't qualifications you're lacking, but a method for "working smart" and proving you can adapt to the industry on top of being able to work hard; as you've surely noticed, the latter is seldom enough. You "don't get this market" probably because you haven't understood what the companies you're applying to are looking for, and you haven't understood what they're looking for likely because you need to recalibrate your understanding of value delivery and expectations in the industry as opposed to academia.
You can contact me (info in bio) in case you want me to look at your CV, want to do a mock job interview or want other sort of feedback.
In any case, stay strong! Also, https://www.reddit.com/r/cscareerquestions and https://www.reddit.com/r/cscareerquestionsEU might come in handy.