I need help/information from a builder

I am clearly doing something wrong. I do not really have a large lot available to try the lot thing with the platform. So I just went in from my lot to even see if I could locate the fence and hedge and no luck. I don't see them in the places one would normally look for them and tried looking in many places but no luck. Typing debug in the search bar isn't pulling up much. But when looking around I did see items listed as debug. I am clearly missing something and maybe too frustrated with my ignorance too continue tonight. Round 1 right lol 😭