Noting can help you sell something in oversupplied categories unless you trow 500 models in a pack and sell it for 10 dollars.
!!The architectural category is astronomically oversupplied!!
Markets get driven by demand and supply, when supply astronomically surpass demand then prices fall to absolute low. Revers, when there is demand for something but supply is short then prices go up and things get sold to highest bidders.
There is lots of demand for 3D content but most people here don't make it and instead keep making the stuff that is already oversupplied.
There is a good analytic tool here to get insight in what people search for and how overpopulated or underpopulated a given category is.
Keep in mind the level of profile has no effect on whether or not a given item is going to sell, the CGtrader algorithms are fine tuned to introduce new models to target viewers and measure performance, if a model get views but no sales then the algorithms will prioritize on models that do sell and then the ones that do not fall further and further down the line to land in place according to its performance.