To make Google Chrome the default browser on your iPhone, you'll need to download iOS 14 and then open its Settings page.
Use the keyboard shortcut: Ctrl + Shift + Del (Windows/ChromeOS) or Command + Shift + Del (Mac). Set the Time range to All time. Make sure Cached images and files is checked. Cookies and other site ...
When you change your homepage on Google Chrome, you'll also want to make sure that the home button is activated.