Broke my T480s trying to install Linux.

Hi,

I have a T480s and tried to install Linux without a USB via this method (https://youtu.be/AFeacAuSy_Q?si=i4-lppNng-aD_8m0)

I think the partition space thing has fried my SSD and now it is just stuck on the Lenovo screen for days.

Can someone offer any advice to get past this I don’t understand how I could have broke it so easily. I don’t want to buy another SSD.