How to amend review issues in Gerrit when there is a second newer review also

Question

Still trying to learn how to use Gerrit and its process. Steps I did where

1. Push first change1 to gerrit for review to HEAD:refs/for/develop
2. W

Answer 1

I tried with these attempts

1. did git rebase -i master
   it didn't work
2. then last what I did, I took backup of files. Deleted the whole project. then cloned it again. Paste files in the required folder from backup and then recommitted again and then pushed. It worked .