Macos Catalina missing disk space after deleting bootcamp

Hello,

I deleted my Bootcamp partition thru the Bootcamp Assistant in MACOS CATALINA.

Unfortunately when going into disk utility it's missing space and only shows 40gb

Im unable to recover or find the lost disk space. Tried everything including booting into recovery/terminal but the commands don't work since it's showing something like "bash" in terminal so I can't use sudo commands etc

I need to sell this Macbook asap and now it's giving me these issues