Have a hard time getting my grass to stay green. is it the grass or

Could be any number of things. Soil, watering, fertilizer, dethatching. See if these help.

https://www.thisoldhouse.com/ideas/9-steps-to-lush-lawn

https://www.diynetwork.com/how-to/outdoors/landscaping/how-to-maintain-a-healthy-weed-free-lawn

https://www.familyhandyman.com/landscaping/lawn-care/11-tips-for-a-lush-lawn/view-all/

In my area, I've found nitrogen and copperas to be helpful.

Your question got cut off- can you repost for us?

It needs iron

Depends on the grass type. Do you know what is down? Is it fescue, St Augustine’s? Winter rye? Unless you can tell us what type of grass it is we may not be able to answer. I know California has different climate conditions depending on your area.

So many questions to your problem before you can get a good answer, Andres. There is help from all of these people, for sure. Give them some good stats on the grass and they will solve your problem.☺