Replying to I dont think any ski boot can fit properly on my foot

I have gone through so many boots through buying and renting in a shop. I have even wore really small boots and it do sent matter what size my fucking heel always slips and moves in the boot especially when I am landing switch. The last boot that fitted me was nearly 6 years ago on school ski trip where the ski school provided the boots and i had them for only a week. I have dropped nearly a 1000 euro on boots that don't fit me. I love skiing but sometimes it can be hard knowing how much easier skiing could be if I could find a boot that fits.