Changing your topic during the research process is common, and totally okay.
If you find an aspect of your topic that is more interesting or more manageable, explore that angle further.
Video via NCSU Libraries. Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States license.
Topic Exploration Video (The last minute of this video was created for another class, and does not apply to this class; watch the first ~5 minutes only).