My New Friend

Bought a plant for myself
to accompany me through the boring days
thought it would be great if it stays near the window
today is the third day and I saw - Yellow Leaves
wondering if it is dying
learned that plants need three things to survive
water, oxygen/carbon dioxide and sunlight
sufficient water everyday, shouldn't be a problem
sufficient oxygen/carbon dioxide, b'cause I'm still alive
it should be the sunlight then
open my window everyday
plenty of wind but not sunlight
How can my plant survive?