If you’re unsure, buy a nice used ps4 with some games for dirt cheap to see if you like it. If you do, I suggest eventually moving forward with the PC route. Either a steam deck or a laptop and an Xbox controller. If you know you’re liking gaming you could go all out on a gaming desktop PC.
Consoles are nice, but a PC game library is compatible for decades of games, and you can buy them for a lot less $ most of the time.
Just to be clear; are you wanting heavy metal music that’s only instrumental? Or are you wanting heavy metal music where the vocalist doesn’t sound like a small angry demon with a cold that just got karate chopped in the throat?