Struggling to press hard enough the clutch pedal on a car

I am new to driving and sometimes struggling to fully, completely press the clutch car pedal until I can't.

It's a 30 year old car, I really don't want to damage the gearbox.

I asked ChatGPT what I could do to make it easier, apart from pulling the seat closer, and it suggested using Converse, or New Balance with thinner soles, and not using my Air Foree 1 shoes in the car.

Have you ever bought shoes just to reduce the chance of damaging the gearbox, because of sometimes not pressing enough the clutch pedal before changing gears? I'm not sure what else I could try.

I think I maybe press the clutch pedal sometimes with too much of the top part of the shoe and pressing with the sole will be more effective?