Recommendations for LED Headlights/Bulbs for 2021 JL

[Blaze2021]

I have zero knowledge about this, and am looking for recommendations for a relatively simple, “inexpensive” solution for my 2021 (JL) Unlimited Sahara Altitude. My bumper has (white) LED fog lights. My headlights are factory standard (kinda dim yellow), not LED. Can I replace just the bulbs with LEDs or do I need to replace the actual headlight assemblies? Of either one, which type/brand would you suggest? TIA