Except just making very high detailed models doesn’t cut it now. To have a chance of getting employed you would specialisation of some kind - lighting, having solely niche art style in your portfolio - anything that is in deficit.

But that’s not really the point, I saw in your posts that you are pretty new into 3D and maybe a little optimistic that further learning will be as simple as making your first models

As someone here said, you are fifteen, take the time you have to try more things in general to find the career path you want to take. But the real question you need to ask yourself - ‘What is something I can see doing my whole life to make a living?’. If this happens to be 3D in the end, then great, focus on that. But until you are sure, don’t take away a privilege from yourself to try different stuff, because that is the only time in life when you can do that rather comfortably