Issues with instalation

Hello I finally decided to get back in to kali its been years and this all looks so different and i just cant make it to work ..
i have Acer Nitro 5 laptop
i tried to install it *** dual boot but for some reason i just cant do it when i get to screen to select partition its not showing up only available memory to install it show is live usb that that is plugged in my laptop and for some reason i jus ta can t make a partition on this laptop it says i have 0 available in partition screen but i know i have over 150 gig free