Question Best Way to Travel from Malaga to Seville to Granada: Trains or Buses?

Hi there. I’m hoping for some confirmation that my plan is sensible. We are arriving at Malaga and planning to visit Seville and then Granada. I’m torn between taking trains or buses for these routes. I’ve heard trains are faster, but buses might be cheaper and offer more flexible schedules. Has anyone traveled these routes recently? Which option would you recommend for someone looking for a balance between cost, comfort, and convenience? Also, any tips on booking tickets or must-knows for first-timers in Spain would be super helpful.