If you're going to operate in Nevada, you're going to have to register the LLC and have a registrated agent, and document the members and managers. Information here:
https://www.nvsos.gov/sos/home/showdocument?id=984
If you're going to operate in California, you're going to have to register the foreign LLC in California, have a registered agent there, and a few other requirements, as well as opening yourself up to paying their state franchise taxes, etc...
https://www.nolo.com/legal-encyclopedia/qualify-foreign-business-california.html
You're going to find that in most cases it doesn't do you any good to register an LLC in another state just because you like it better when all your business is in another. While an LLC will provide some casual anonymity, if it comes down to an actual liability issue, any attorney worth a dime will figure out who you are, and you are personally liable for your own actions. Note well that you will need to identify yourself personally to the Nevada Secretary of State.