I have added a picture of my orchid's root. Is it dying? 😭
I have inherited this plant from a friend, I have now idea of what kind of orchid this is. And not sure how to take care of it 😖

Your orchid is most likely a phalaenopsis. Please read through all of our threads here in the Orchid Forums regarding the care of Phalaenopsis. There are many such threads. You can learn so much.
Also please read "the sticky" on starting with Supermarket orchids-Phalaenopsis for additional and important information.

From what little I can see, there is not a single root that is alive. BUT you have provided us with very little information regarding this plant. We need to have better images and detailed information regarding its care.
How much light?
How often do you water?
What type of pot is it?
I I had to venture a guess, I would say that it is very under watered!!!

Hi ELENORA,

I agree, your orchid looks like a Moth Orchid (Phalaenopsis) I'm an extremely novice orchid grower and not a great caretaker of orchids so I can't offer advice but here are links to the American Orchid Society care and culture sheets for Phalaenopsis Orchids:

Novice Care and Culture Sheet: http://www.aos.org/orchids/cul...
Regular Care and Culture sheet: http://www.aos.org/orchids/cul...

You also might be interested in information about Phalaenopsis Orchids on this page of our Orchid Forum: The thread "🗣 Starting out with Phals/Supermarket Orchids 🛎 ✍️" in Orchids forum

I have added a couple more pictures. It's in a spot with indirect light. I water once a week, under the sink because I read that it doesn't like to be soaked in water. I have to admit that before knowing it, for a few months the bottom of the vase was always in water, and in fact I killed her sister with Rot roots :(

A weekly watering in the sink so that the water goes all around the bark chips should be about right. Keep it in very bright indirect light such as on a north windowsill or close to an east window. Fertilize it monthly at half strength with a high nitrogen fertilizer

Don't expect it to do much. It normally blooms only once per year for about a month or so and produces only a couple of new leaves each year.

Okay. Great! Here is what I see,
The pot is a bit too large and the media is too coarse, meaning the individual pieces are too big.
You can water It in the sink like you are doing but you need to increase the frequency. Once every four days, 5 at the most. Light should be bright without any direct sun light.
Fertilize once every three months.
It is not that it doesn't like to be soaked in water, it is more like that it can't sit in water.
So water it very well and water again in 5 days. Make sure the saucer is not holding water.

Because of the size of the pot, a thorough weekly watering should be more than enough.

Bark chips tend to absorb nitrogen so monthly high nitrogen fertilizer is usually called for with bark potting mixes.

With all due respect, most growers have debunked the notion of orchids growing in bark need a high nitrogen fertilizer. The feeling being that orchids couldn't handle it efficiently.
A great many growers who fertilize monthly or even weekly use a balanced blend fertilizer believing it is more beneficial. Something like 18-18-18 or 20-20-20.
Also there is not much point in fertilizing frequently without much of a root system.

Should I repot in a smaller pot and change media?

BigBill said:Okay. Great! Here is what I see,
The pot is a bit too large and the media is too coarse, meaning the individual pieces are too big.
You can water It in the sink like you are doing but you need to increase the frequency. Once every four days, 5 at the most. Light should be bright without any direct sun light.
Fertilize once every three months.
It is not that it doesn't like to be soaked in water, it is more like that it can't sit in water.
So water it very well and water again in 5 days. Make sure the saucer is not holding water.

Eleonora just grow it as is. If you are new to orchids, it might be best if you don't disturb it again. I am just trying to provide you with as much good information as I can.
A BIG thing you have going for you is that Phalaenopsis respond very well to repotting! Very well! They typically produce new roots within 4-6 weeks after repotting. Sometimes it could be more like 8 weeks.
Just keep it out of really bright light and make your regular waterings. It will do fine!! I promise.
I have been growing for a lot of years now and I make it a habit of repotting my orchids as soon as I buy them. I want them in my preferred media ASAP and when I repot, I get to see what the root system looks like. That is very important to me. The huge unknown, the health of the roots, becomes known to me right away.