Best way to stay anonymous on chrome?

Be also careful to not use details like phone numbers or similar name in your Paypal account.

If you have lots of troubles, when the next solution is to ask someone, like your wife, to make her own account you'll use for buying things on the Internet.

If you don't have a wife, well, legally you can't use it because you need someone who share your common life and this is the most suitable solution (legally).