Pls take a deep breath & CALM DOWN, your plant is not dying, but seems to be having a bad time. Dying plants don't have new blooms, as your does. You may remove the older dead stems, cut them off at the soil line.

This is not a Tiger Lily, it's a Peace Lily (Spathiphyllum). How often are you watering? How do you know when to water? Is that soil hard to your touch?

Did you repot that yourself? Do you know what kind of soil that is? I think that pot may be too big.

These questions matter in the care of the plant; am asking them for us to try & learn how the plant has been cared for so we can try to figure out how to correct it.

I water it when the soil is Dry on top - maybe once a week. Yes I did repot it myself. It is miracle-gro potting mix. The soil isn’t dry on top, I watered it about 4 or 5 days ago.

It looks ok. When did you buy it, ie, how long have you been growing it? The repotting may not have been necessary.

Mmm somewhere between 8 and 10 months

Cut off the brown flowers and leaves and see if that looks a lot better. Peace lilies are very tough. They often wilt badly when they need water but perk right back up with a good drink. It sounds like you are doing the right thing(s) by allowing it to dry some before watering again.

Yes, some of that brown is old flower stems. They always do that. It's not a problem. Just cut them off right at the base.