Real estate in USA

Coming from another country and now about to sell our home in the US, is it just me or is the whole process very shady and underhand?? Paying buyers fees? Paying a buyers rate down, not being present at a showing, let people walk around your house whilst you aren’t there seems like it’s asking for trouble!! Surely you don’t go for a home you cannot afford, seems totally wrong to me.

I’m just finding the whole thing very unsettling.