Remove some of the files like .tif files from command line using 'rm -rf' command . Should free up enough space. For 'rm -rf' you can search in google. It's fairly common command in linux cli.

i have only 2 tif which i was using for train and test, any more ideas apart from deleting these two, i am looking to free space fromo memory

Resort to ls -l like Nikhil mentioned to identify what is occupying space from cli.