Q.Why Is My Calla Lily Foliage Turning Yellow ??
I’ve only had my calls lily for a couple of weeks and from the beginning it has been turning yellow. I make sure the soil is moist with well drainage and keep it in indirect bright light. Any tips would be much appreciated I don’t want to lose my baby thank you !! The last picture shows how some of the leaves are already losing their bright green color.

Certified GKH Gardening Expert
Unfortunately, your photo did not come through. I am unable to see the damage. depending on the size Unlike most plants, the soil needs to remain moist. Any drying out will cause issues for this one.
Here is an article that will help you to care for the plant in the meantime:
https://www.gardeningknowhow.com/houseplants/hpgen/indoor-calla-lilies.htm