It's those young ones with student debt who will work at any pay and at any time just to get a foot in the door.
My friend worked for a specialized tech company that billed out at $5 grand per hour and he himself only got paid for gas to go to locations and do all the work. He was like a doctor intern and six months of that got "Dell" on his resume and then he was able to land a regular, high paying job in the tech rich state of Texas. Until then he was just a ten dollar an hour computer tech with no real chance of advancement so he had to live off of credit cards and rack up debt as an intern but after a couple of years, he paid off debts and got much steadier and better paying work. It was a calculated risk but it paid off but only in the long run.
Your six years for master's and then coming to America will be a short term loss (6-10 years) versus your peers who entered the work force right after high school, but by the time you are in your mid-40s, you will be glad you did school and got out of your comfort zone and came to America.
Since at least the end of World War II, I see a trend where a kid goes to school or learns a trade, then comes to America and works for a few years, and then somewhere in their 30s or 40s starts a business and before they retire they are pretty well off. Convenience stores, service businesses, restaurants, motels, retail stores and the like are mostly owned by former immigrants from Asia, Europe, Central, and South America where I live. Us lazy Americans usually don't want to work that hard but almost every time, a young person from another country, whether rich or poor nation, seems to be willing to work twice as hard as any American and do so in some entrepreneurial way to great effect.
As a general rule, most Americans are conditioned to work 40 hours a week, or a little more, and work for somebody else and won't go into a higher risk entrepreneurial adventure. But stuff like that is kid's play for anybody wanting to come to America and play catch up. Sometimes not having the same culture or language simply acts as a huge motivator to make a person a great entrepreneur.