The hairline is always asymmetrical and uneven, so this is normal. Consider hair transplants to augment more hair on the weak side, or laser hair removal on the opposite side
That depends on whether you want the lower part higher, or the higher part lower. For the former, laser hair removal may good for you. You have dark hair and light skin so that makes you an ideal candidate. for the latter, well done single follicle hair transplantation is a great option. Good luck in your process!