You can write it as long as you have a sense of music. If you want to organize, you need music theory. This is not difficult to learn in a month, but you must have strong solfeggio to master it. It takes a long time to study and train, which is much more difficult than learning guitar.
Arranging requires a strong theory as a basic skill, and then you need to know the playing techniques of various musical instruments, especially the four keyboards, guitars and bass drums of the band, which not only require theories and musical instruments, but also require strong creativity and musical imagination.
In a word, if you have a good sense of music, consider learning music, or you will waste your time and feelings.
If you have a good sense of music, you have to make great efforts to learn by yourself, even if you find a teacher to learn, saving time and effort! Some things can't be learned by yourself, and of course some things can't be taught by teachers.
If you really like music, I hope you stick to it!