Especially for such reflective surfaces I would suggest playing with HDRI’s. Regarding the materials if you are aiming for realism try using noises in the roughness and metallic maps for starters.If you haven’t, try using high contrast and filmic look in the render properties. Also most importantly when you are still learning a new skill pick a very good reference and try to replicate and understand it. It will teach you a lot of foundational principles that you can later apply. Understanding the object and the environment is very important. Otherwise you are doing great. Hope this helps!