Success! My wife cannot use her phone (Redmi Note 9s) for 3 days already because it constantly restarting on its own. I contacted a well known technician for Xiaomi phone and told him about it, he said that it is possible that the battery is already been damage and they will replace it for 1800 pesos ($32) which is to expensive for me as we are into financial crisis now. Then my wife told me that i should try to fix it, because she knows that i did work as a technician on a semiconductor company before. Doing some research on YouTube, i found a solution and it did work. Some of my friends here knows that i was a seafarer, but my first job is a technician for 5 years in a semiconductor company.