Kavanah comes from understanding what you are saying. If you don’t understand what you are saying how can you mean it? When I speak to people I tell them say what you mean and mean what you say. But if you are not speaking in your common language then how can you mean what you say? Only if you fully understand what you are saying can you really mean it. Therefore get yourself a transliterate siddur so you can check the meaning of the words you don’t understand. Each time you daven you will have more of an understanding of what you are saying and you will find yourself having more kavanah the next time you daven, and each time thereafter.
You will also find that you have favorite teffilos because some teffilos will touch your soul more than others.