1. Head to: https://takeout.google.com/ - You may be asked to log in.
2. Tap "Deselect All". We only need three data files.
3. Scroll down and select "Chrome".
4. Then tap on "All Chrome data included", from here you only need to select History.
5. Then scroll down further and select "My Activity".
6. Then tap on "All activity data included", from here you only need to select Search.
7. Then tap on "...format" button, at this point, it should be called "HTML and 2 other formats"
8. Tap on "activity records" and select "JSON" under history.
9. Scroll down further again and select "YouTube and YouTube Music"
10. Then tap on "All YouTube data included", from here you only need to select history and subscriptions.
11. Tap on "Multiple formats" and select "JSON" under history.
12. Scroll to the bottom and tap on "Next step" and then "Create export"