I'm afraid the author has a very wrong attitude for entrepreneurship. Entrepreneurship is not about following someone's advice mechanically or a guaranteed get rich schema. It's about building competence and understanding something about the target market better than anyone else. The author didn't mention what kind of competence s/he has got from all those attempts, so I suppose it has never been the goal. The competence may or may not lead to a commercially successful enterprise. But even in the case of failure, the explanation should still be based on competence, e.g. "I understood that the product didn't provide much value to the target audience because of X, and also the audience turned out to be Y, and the competition was Z. So while I learned about the market a lot, I couldn't offer anything that would provide so much value that the target audience would be ready to pay for with amounts sufficient to maintain developing the product".

If the postmortem is "I tried to follow what influencers said, but it didn't work, so I'm tired, I give up" then, well, no surprise here.

And yes, startups are hard. Very hard.