How to get rid of dark circles? Can they be improved with eye cream?

I am posting this because my dark circles have become a serious concern.

Even though I get a lot of sleep, the area under my eyes looks dark, so I'm really self-conscious about my dark circles..

It covers it to some extent if I use concealer, but
Over time, the area under my eyes looks dry, and sometimes it actually looks even duller.

Since dark circles have various causes, I'm not sure if they can be improved with just eye cream.

Sometimes the area under the eyes looks bluish,
Some days it looks dull like brown, so I'm confused whether it's pigmentation or just because I'm tired.

For those of you struggling with dark circles, what kind of care was most helpful?

I'm wondering if there is a difference if I apply eye cream consistently, or if choosing the right concealer color is more important.