You can use a standard email client hooked to Gmail to stop Google from getting your browsing data.
You can relay your Gmail to another account with read-only access, replying from a VM with only email use (I do this on my phone). Or, only get/send your email from a VM that does nothing else.
Because it seems like there's two issues here: Google gaining intel from your email itself, and Google gaining intel from your browsing data, gained from your use of Gmail in a browser. What I've suggested addresses browsing data.
You can relay your Gmail to another account with read-only access, replying from a VM with only email use (I do this on my phone). Or, only get/send your email from a VM that does nothing else.
Because it seems like there's two issues here: Google gaining intel from your email itself, and Google gaining intel from your browsing data, gained from your use of Gmail in a browser. What I've suggested addresses browsing data.