At 31, is a life of living in a studio apartment and working part-time jobs considered falling behind?

I was having a drink with the manager I work with at the billiards hall
(the owner's youngest brother)
after work, and he told me that living in a studio apartment and working part-time jobs in your early 30s means you're falling behind everyone else.
He even called me a bottom-feeder... I'm feeling a massive reality check right now.
I've been working my tail off 6 days a week, juggling part-time jobs at a billiards hall, a karaoke bar, and a convenience store,
earning about 3 million KRW a month.
I'm wondering if I should push myself a bit more and move to a different place.
(Currently living in a rooftop studio apartment with a 1M deposit/220k rent)
I'm seriously contemplating whether I should quit the part-time gigs and just get a proper job, even though corporate life seems like hell.
I've been trying so hard to live without caring about how others see me or social perceptions,
but hearing it said so bluntly like that makes me feel so much self-loathing and destroys my self-esteem.
Lately, I really don't know what's what...
I don't even know... what the right way to live is.