Audio/subwoofer recomendations for 2022 Impreza sport hatch?

[corruptedbloby]

Hello, I have a 2022 Impreza Sport hatchback, and I was looking for something that would improve the audio setup. It has good sound to start, but when listening to things like heavy metal, the heavy and constant bass/low notes tend to mush together with everything else, and I was wondering if there was a small subwoofer or something that I could redirect the lower notes to. I don't know much about audio at all, so if there's a better solution than that, let me know. i would appreciate advice or recommendations on either ideas. IDK if this is important or not, but I bought the car new with all the warranties, so something that would potentially void that would probably be off the table. I also don't want to spend a crazy amount of money.
Thanks!