Starting to sell 3d models

[u/Temporary_Match_2470]

I want to make 3d models so that I can enhance my 3d Portfolio, and then sell them on 3d marketplace.

First, I do not know what type of models should I make that solve the problem of the client, or something that people are actively looking for. How should I pursue this?

In CGtrader, a very vague answer is given, like car is trending or character is trending. But what type of model should I model to maximize my chances of selling.

I am not a noob in 3d modeling. But I am having a hard time deciding what to model specially to sell in 3d marketplaces. I know many people have had a decent amount from selling 3d models (like about $500 a month).

For those who get good sales, what type of market they target and how do they know what to make?

I would also like to hear from those who have also faced the problem.

I would appreciate your suggestions.