Just ignore those ads or don't use Google at all just type the right address correctly check its data and if you have a phishing tool it will be blocked never enter your passphrase or private keys, if you are not 100% sure that you are in a right site, always take your time, think and proceed when it safe, it will save you your investment.
When things comes to money, you can't be too cautious. Suggestion to type website address isn't perfect too, you can misstype address. And scammers are often using such mistake and they have taken similar domains. Maybe it would be best to bookmark sensitive websites