So, if you get off to a good start in your dating life and career from your late teens and early 20s, you get plenty of approval and validation and compounding success as you progress through life, and acceptance that you deserve the success you're having ("they were always a high achiever, ever since school days").
Whereas if you're not in the top tier of "chosen" people and experience a few painful rejections and setbacks, you're made to feel that's just what you deserve and what you're stuck with, and there's not much you can do to improve your lot. I suspect this has become more of an entrenched belief since the discovery of evolution/DNA, and the generally accepted belief that most of our life outcomes are predetermined by our inheritance.
I think the dating apps (and employment recruitment platforms/techniques) intensify this further, by filtering based on a few simple characteristics, some of which really are genetically predetermined (height) and others that are downstream consequences of having had a blessed start in life (income/education level/job seniority/state of health).
Society generally, including/especially the dating/employment spheres, don't seem to offer much support for people who really sincerely trying to undertake a journey of personal improvement (outside of mainstream accepted practices like conventional fitness training and education). You're just expected to be "good to go". Someone who may have been dealt a rough hand in life but is trying very hard to improve themselves, including their social skills, their emotions, their health/fitness, their career prospects - all of which will lead them to becoming better romantic partners over time - can find themselves getting little support and encouragement along the way, and indeed can get a lot of discouragement from some quarters (including friends and family members).
I think a lot about how the world would be better if more people were encouraged and empowered to go on long-term journeys of deep personal growth, and what kinds of social platforms, including dating and employment platforms, could emerge out of that and bring much more opportunity and satisfaction to people who currently feel the despair of being left behind.