As stated......the western States have millions of acres of public land...
Whether it be US Forest or BLM......dispersed/dry camping is free....find a spot and enjoy
As in my pic below.....a spot like this is rather easy to find......set up your trailer and enjoy the solitude
You may want some sort of off road vehicle to fully enjoy.....thats another subject
Yes also on the tandem axle trailer.....pulls better......safer.....Toy haulers are big in the west also..another thought
https://www.blm.gov/programs/recreation/camping