I will enter 9th grade come September. There are three people in the band; a keyboardist, a drummer, and me, the guitarist. I really want to ad lyrics to our music but I can sing or I can play guitar. I can’t do both. I want us to sound a little more punk if that helps. We only have one song that all three of us have parts for but we have a bunch that I have made guitar parts for and the drummer has made a few for the piano that sound awesome.
Practice. Everything seems hard or impossible at first until you keep practicing and your brain learns to do both things at once.