Changing permissions for an internal Drive for steam games

[wary herald]

Hi, Im a brand new linux user, I have freshly installed mint and am having a few issues, namely with installing steam games. I have an internal drive I am attempting to install the games to, which steam will not accept as a valid destination for installing. There are files still on that drive from a previous install of windows. When attempting to zip or delete those files, I get a message that it is a read-only file system, and i dont know how to change that

[paper magnet]

please show output of lsblk -f in a fully maximized terminal