20 is gonna be like 1 of several cycles through existential ennui, my dude. All for different reasons. You get like a decade between them though for life to happen

Like the other commenter said, if you're good at day trading that's cool to make money and all but you're basically living in a casino you've built for yourself. Judging by the other behaviors you've listed, that would fit the profile of dopamine trap-seeking tendencies that happens to a lot of young men.

I don't know how to engage with that profession healthfully, it kind of seems like you have to have your face glued to a screen in order to make the cut. But finding ways to sabotage that dopamine drip would probably help you get some more activity going in other areas of your life.

Things like set endpoints for your workday, phone apps that restrict color after a certain period. Gamify some dumb little quotas for yourself like "every six hours of work, call my Mom or someone and check in" or "for every transaction I did today have 1 minute of no screen time before bed" or mandatory walk and snack break twice per workday on a preset alarm

Just speaking from having worked a couple jobs where screens and quotas were at play with my personal time.