Had the same realization here. But still, that was not enough to placate my feeling of the world being inadequate to my needs and desires. So I joined a progressive political party, partake in biweekly local party meetings, working groups and other odd gatherings. I also help with local projects like having cars banned from an inner city street for a day to repurpose the gained space into a children's playground with outdoor toys and stuff.

In short: take your anger of the world's senselessness and inadequacies and direct it into positive action. It really works (for me) to assuage the helplessness about my and humanity's situation in general as I actually am making a difference in the world by coordinating with likeminded people. It really gives you a very palpable and natural feeling of one's identity finally and actually making or having a some kind of "sense". For me it really was an epiphany on the level of like "this feels an order of magnitude more natural than all of my previous life experiences in school, uni, or work life." I feel like getting into local politics is more akin to discovering a whole new circle of friends who share the same goals as you, than it is just about making do with the work groups and desired outcomes you get assinged for in uni or at work.