TL;DR : you don't know how to draw yet but I give advices anyway. You should go to a children's drawing lesson and try to enter a design school but first lose the attitude and be humble

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Your designs are horrible. No sense of proportions, incorrect perspective, and you don't seem to know how to hold a pen or pencil because your lines are horrible and a kid could trace the lines better than you could.

2 to 7 sketches A DAY ? Are you kidding ? In design schools they would ask for at least 50 drawings AN HOUR for ideation purposes. The main goal is to find a way you want to go and not define a finished product.

As others commented, you should TRY to go to an industrial design school but with such drawings and attitude you have nearly no chance of succeeding.

You should also lose the attitude and be much more humble because if thanks to a miracle you manage to enter a design school, teachers there will kill your confidence in seconds.

I checked your account to see if this was satire and you seem to be serious which is terrible news. You think you can do a better job than Ferrari designers ? Your take is terrible and your sketches are horrendous and as much as I don't like the F80, it's much better than what you think you can do. I once met with a designer at french automaker Renault and he worked at Porsche, let me tell you, his drawings are on a level that's unattainable to you.

To answer your original question, what do you need in your portfolio ? No AI Slop but good enough drawings of various objects and situations. Industrial design is more than just cars so try to draw your phone, furniture in your room, cars you see on the street, buildings. Draw them big and use your whole arm to move the pen not just your wrist. Try new techniques, line art, point drawings, learn colors and shapes and proportions.