You are talking about transposing a song to fit your instrument. This is done every day. You should learn how to do this, because it will be very useful to you! You can do it in your head, with pencil and paper, or using digital programs. They are lots of free ones out there, but I use the high end ones I need in my business - Dorico, Sibelius, Finale. I am not as conversant with the amateur ones, but summertime will suggest names for you. But learning eventually to do it in your head, is best.