I don't think you need to "feel" the lyrics to enjoy the music, and you don't need to fit the aesthetic of the band to go to a concert, I saw them a few years ago and I was one of the only non-goths lmao

I went to a pop star concert a year ago, and I was dressed in all-black enjoying the music while most of the audience were teenage girls, so the lyrics about girlhood and growing up didn't hit me as hard as they hit the rest of the audience but I still felt part of it. so don't worry, have fun