Tried to dual boot W11 & Ubuntu & bricked my PC

Not sure if this is the right place to ask or if anyone can help me, but today, I installed the ubuntu ISO & converted it to a bootable format on an 128GB SD card (All my USBs are too small) I ran the installer as normal & here’s where I think I messed up. I allocated a 27GB partition for linux but that option didnt apper on...