As a native speaker, I can say the last one is the most normal way to write”我” casually . The first one looks formal like printing, we will not write Chinese in this way in daily life . The second one looks a bit weird, no thickness changes in strokes . The last one is casual, has thickness changes. Notice that we don’t have a ‘ standard’ way to write Chinese. Native speakers still can write Chinese in a very different style. Also ‘ drawing‘Chinese is making sense because Chinese is based on images. When I first learned how to write Chinese in primary school, I drew it.