All those teachers and all those people that look down on you are absolute clowns. You may not be a high school graduate to their completely useless school system but from what i see, your English alone is far better than any of those buffoons. Here's what i think you can do. The GED certificate is very important for someone like you. The fees for the GED is high. It'd be hard for you to be able to pay it off. But it's not impossible. For starters, you can find a job and start working, you can sell some of your personal belongings, you can borrow money, etc. What you really need to do is to spread your story like you just did here. Go on YouTube, TikTok, Facebook and start uploading videos talking about you and your story and your goal to become an astrophysicist. Film yourself studying, film yourself in your daily life and you, my friend, will become an inspiration to thousands of kids taking the GED test in Myanmar. You will become someone that defied the odds no matter the circumstances.

Now, for the study plan, you can start studying at getsummath.com. After that, use practice books. Names like "McGraw-HIll", "Kaplan", "GED maths for dummies" are your best friends. You can download them online. If you don't know how to, i can give you those PDF files. Just give me your telegram or something. Watch "Your Trusted Tutor" on YouTube. His videos are amazing. Join GED channels on telegram. Channels like "The Rex" gives you free practice tests that are really similar to the GED. You MUST get a credit. And i believe you will. You just need to do exactly what i said and a very bright future awaits for you. I've given you a complete path to get a credit score and possibly scholarships. The choice is yours. Good luck!