Add your phone number and an alternate email address to it so you can recover your password if someone accesses your account or if you forget your password.
What is the best way to secure Gmail account?
Gmail accounts undoubtedly hold an abundance of personal information. If someone were to access it, they'd effectively have access to the rest of your online profile. To secure your Gmail account, you’d better follow the guide Four Steps to Secure Your Gmail Account in 2020
Besides, to avoid any potential risks, you should log in your Gmail account on others' devices, especially public devices like computers in the airport.