The Living Force
The sheet back to original state. Since the sheet is locked, you won't be able to filter it or update it. But, you can create a temporary "Filter view" for your self ( screen color changes) and use it. The changes you make will not be updated to the original sheet. Here is menu path. This will create temporary copy for you use it and modify. But, filter view will be discarded when you close it.
Here is an article on it
In this tutorial, learn how to create a filter view in google sheets. Filter views are great as you can filter the data and store that view for later.
Those of you who wants to update the Other language titles, please post it here for now.