I feel sad, I wish my husband was still attracted to me.
Why do you think your husband isn't attracted to you anymore?
I look so much older than he looks and he looks so cool compared to me.
It's very understandable that you would feel sad if you think your husband no longer wants you. But, just because you think he's cooler than you, that doesn't mean he doesn't like you! You should talk to him about how you feel - he might not even know you have this concern.
I don't know what to do to make myself more attractive.
If you feel like your appearance needs an update, you could talk to a stylist. They could help you find a new hairstyle and to pick out outfits for you to wear. I think it would give your self esteem a boost and make you feel more confident.