I completely relate to you. I am studying to be a teacher too but I come from another country, so my English is not perfect. Now, I have learned some ways to teach by being a student in a classroom where I'm behind due to my language barrier. My first advice is that the most important and key action towards helping a student is creating a safe environment, where they feel confident to participate. The student will be open to learn he/she feels safe in his/her classroom. ESOL strategies are found everywhere on the internet there are many of them. I will mentioned my 3 favorite ones. First, using pictures while explaining the lesson can be a great guidance for ESOL students because they can understanding the picture in their language and then make a relation to the words. Second, reading along what the students should be reading helps them recognize a word by either the letters or the sound. Place them in a part of your classroom where you are most of the time so they can ask questions, or you can check on them constantly without interrupting the class.
Hope this helps.