.gitignore not working code example

Example 1: updated gitignore not working

git rm -r --cached .
git add .
git commit -m "fixed untracked files"

Example 2: gitignore is not working

git rm -rf --cached .
git add .

Example 3: git ignore not working

git rm -r --cached .;
git add .;
git commit -m "Untracked files issue resolved to fix .gitignore";