Just my two cents. I would highly recommend taking another year or even two to keep thinking about what you want to do and how a master's degree fits into the equation. If you are depressed by your job, I would suggest focusing on an immediate career pivot. Instead of turning to grad school for that career change, I would directly apply to entry level roles in political risk, economic consulting, or international trade, etc. and exploring those career paths before considering grad school again.
There are a few benefits to waiting:
First, the more relevant experience you gain, the more likely you will get some substantial funding.
Second, the more time that passes, the more likely you'll be able to go to school without any pandemic restrictions--you'll get the full graduate school experience.
Third, a policy degree is most valuable when you have a clear plan for what you want to do with it after. I live in DC and have come across dozens of people who found themselves in a similar situation as yours. They decided to use an MPP/MPA/MIA/MPH as an expensive way to escape a career they felt stuck in. And most of them have regretted it either because they are overburdened by debt, their dream degree and career track did not live up to their expectations, or both.
I have also been in your shoes and felt deeply depressed by my first job post-undergrad. I was drained everyday, I would literally cry on the train to work, and I felt like there was no way out. Luckily, I was able to find job that I actually liked and matched my interests. That job has tremendously changed my trajectory and I now have a crystal clear picture of how a master's is going to help me reach my goals. Ultimately, a degree is like a power tool. You should know when you need it how to use it or else it is close to useless.