git - Updated gitignore but files still being tracked -

i updated .gitignore ignore files, when sync changes still there on github.

please me. have tried many things.

edit: looked @ don't want because changes repo. want gitignore work me

if want untrack specific file can use command:

git rm --cached filename 

if want untrack lot of new files added gitignore can this:

git rm -r --cached . git add . git commit