Gotta agree with Danny and Danny above^^^. The long term "freeloaders" are making a really bad impression relative to RVers in general. Drove past a Walmart on I-15 the other day and it looked like Beirut
That said there are Free Camping opportunities that do not impinge on the general public's right to access their local shopping center.
Check this site:
https://freecampsites.net/ Most sites listed (at least out west where we travel) are open space, BLM or other such areas. We use this app to locate overnight stopping places while on the road from point A to B. No hook ups, just a place to park, eat and overnight before moving on to our destination.
Once we even had dinner with the "Aliens"