The advice I always give my students is do not try to be a different person in English. In English and in your native language, you are the same person. So you should think about activities that you find interesting, entertaining or useful in your native language, and try to do those in English. For example, if you enjoy games and quizzes, you might enjoy a vocabulary app. But if you don't enjoy that kind of thing in your native language, you will hate it in English. Or if you love reading, you should do that in English. If you don't enjoy it much, you will hate it even more in English. Do the activities you enjoy. They all improve vocabulary. It doesn't really matter which ones you choose. The important thing is to choose activities that you will consistently DO. The other main reason to try to do the same things in English that you do in your native language is that you will learn vocabulary that you actually want/need. Good luck!