Thanks for writing to us. We don't currently have an alternative for tagging, but we have made some improvements to search over the last few months. For example, did you know you can search for a specific folder or restrict your search to files within your current folder?
We have also introduced a new feature which will allow you to add custom metadata properties to your files. As part of that, you will be able to search on any metadata values.
However, if you are interested in using tagging, here's a workaround that might help. First, switch back to the classic view. Add any tags you want to your files and then switch back to the New Look. While you won't see those tags in the New Look, our search will actually pick them up. Hope this helps.
I will also write to my product team and check to see if there have been any concrete plans to bring in tagging back to the UI.
PS. Help others find answers by selecting "Accept as Solution" if a post answers your question."