Hello! I understand your Yahoo News app keeps crashing on your Macintosh with OS X 10.15.7, and you want to get it working smoothly. To help you better, could you tell me if you’re using the Yahoo News app as a standalone application or primarily accessing Yahoo News via a web browser like Safari or Chrome?

In the meantime, assuming you’re using Yahoo News via browser, here are some steps we can try to troubleshoot crashes:

1. Restart your browser: Completely quit the browser you use for Yahoo News, then reopen it. This clears temporary issues with memory or processes.
2. Clear browser cache and cookies: Old or corrupted data can cause issues. In Safari, you can go to Safari > Preferences > Privacy > Manage Website Data, then remove Yahoo-related data.
3. Update your browser: Make sure your browser is running the latest version compatible with macOS 10.15.7. Outdated browsers can cause crashes with modern websites.
4. Try a different browser: If Safari crashes, try Chrome or Firefox to see if the issue persists.
5. Disable browser extensions: Sometimes extensions interfere with websites. Disable any extensions and check if Yahoo News app still crashes.

If you are talking about a dedicated Yahoo News app and not the browser, please note that Yahoo News app is generally designed for mobile devices. On macOS, you may be using a progressive web app or something similar. In that case, details on the exact installation method will help me guide you further.

Could you let me know which option fits your situation? That way, I’ll provide you with the most effective next steps.