Hello Amine, I didn't know what BOTIM was until your question, but since it's a free VOIP app, I'm sure many teachers would be willing to download and use it just for you if you ask. I certainly would. I've downloaded and used other similar apps for other students who request it. My suggestion is first find the teacher you like best and ask them if they would use BOTIM for your lessons instead of trying to find teachers who already use it. Hope that helps.