I making music for the first time, and idk if should I record my lyrics first and play my instruments to fit around them or vis versa. Help?
I think you'll find it easier if you have something to sing to. At a minimum, I'd want to lay down a rhythm track before the vocal. You can add lead instruments after the vocal so they can work around it. In either case, you'll find it useful to lay down a "click" track for a metronome to set the time. You delete this track from the final mix.
There is no set method. Try anything to find out how it works for you, and if it doesn't, try another way.