Rotor or wheal bearing maybe both?

I’m having an issue with my car where the steering wheel shakes and I can feel shaking in the front driver seat when I drive at around 60 miles per hour or faster. The shaking also happens when I hit the brakes, especially at higher speeds.

I’m not sure if the problem is with my rotors (maybe warped?) or if it’s a wheel bearing issue, or if it could be both. Does anyone have advice on how to be 100% sure which part is causing the problem? Would love to hear your thoughts or any tips on diagnosing this issue!