My dad managed a multistory rental property when I was a kid, and I used to have to help him on occasion.
He would go in with a bunch of trash bags, load all the delinquent tenant’s possessions into the bags, change the lock, and put them out in front of the building.
I found it to be a depressing process, and my dad didn’t like doing it, but in that type of thing, either the landlord goes broke over time, or the delinquent tenants get evicted.
california is a state in which the landlords are assumed wrong. All rights to the renter. I had three rentals and got rid of them soon as I could.