@Sonervousimgonnathrowup You've said you don't want to hear from people who are happy they are single. You've also made clear you don't want to hear from people who settled. So... who do you want to hear from?
You asked how people made their peace with being alone. You've had the answers. Either people find the positives in their situation and learn to enjoy it, or they make a compromise.
I am very happy being single. Was I always? Of course, not.
When I broke up with my ex, the man I thought I was going to marry and spend the rest of my life with, you bet I was miserable. But I made my peace about being alone by learning to love the freedom that being single gave me.
I'm on my own, but I do not feel alone.
You can't be sad forever. You can lick your wounds, you can rant, you can rave, but at some point, you either move into acceptance or compromise. Either you can make a conscious choice to influence that, or you can go with the flow and see which one life throws your way.
Or, you know, you could meet someone.
I've ruled it out for reasons and I'm content with that. If you're not happy being on your own, why don't you take the secret option of not being alone? If it really is the thing that makes you so unhappy, you could take radical steps to widen your dating pool like moving to another town or even another country.