Hello! I have been learning japanese and I don't feel like I fully understand what wa meant anymore after I got introduced to ga. and I get confused now on what to use and where. I used to assume that wa always prioritized the subject before it (watashi wa), but recently when I learnt ga, it also indicates the subject before it? which confuses me and makes me unsure off what each mean when I see them, and when and how to use them. ( for example, eego ga yoku wakarimasu is in the textbook, but why can't it be a wa? unless it can, and in that case whats the difference?). as for de, I don't really grasp it as well, I know you can use it for when you use things, such as chopsticks or scissors, or for transport, but I feel like there more to it. thanks for any help or insight.