Hello
Do they show failed attempts or successful for those locations/IPs that are not yours? If failed attempts, then no issue, meaning security measurement is effective, but if they are successful, that is a problem.
Besides changing your password, in your account online, also go to Security > Manage how you sign in, please make sure 2 steps verification is enabled, and all contact info listed is yours and up to date.
Then also in Security, click on Sign out everywhere. This is meant to kill any session that's still connected. Unfortunately, this one will take 24 hours to take effect.
Then go to Devices, make sure all devices are yours. Delete anything you don't recognize.
Next, go to Your info > Sign in preference, also make sure all alias set up here are yours.