You think you wasted your twenties? When I was your age I was cleaning window blinds and dropping out of college, and I was yet to waste 4 years as a massage therapist. Got my first real job at 32. Now I’m almost fifty and finally enjoying life.
All this to say there’s so much life ahead of you and it can take you a million places if you let it.
I’m with the Romans, 18 might be the age we let you drink but you shouldn't consider yourself an adult until at least 25. If you're 28 and worried you've wasted anything... Wow.. you're literally only in your third year of adulthood.
At 25 I chose to quit a job to focus on my degree, finally a solid adult risk-decision. At 28 I had graduated and been staying on to publish a paper based on my thesis, and I disproved my thesis, and I made the sober decision to quit that career and pursue a different one—and to uproot my life to pursue the girl who is now my wife. You can say that the first decision was undone by the second I guess, but I still feel proud of it, just how I made the decision and followed through and took a risk and made ends meet. I just entered my 13th year of adulthood and I am still learning so much, haha, I can't imagine now thinking “It’s all over!“ at only year 3.
Yeah, this person is probably under-paid and definitely over-worked, but having 4 years of full-time employment in tech at age 28 is a good position to negotiate from for a better job.
All this to say there’s so much life ahead of you and it can take you a million places if you let it.