Hi Omer,
I'm making a few assumptions. First, that you used an (o365/ADSync/hotmail) account You should be able to view your sign-in activity, look for unusual successful sign-ins. It common to see unsuccessful sign-ins, just the nature of the connected world. You are likely ok where you did not enter any information, but should always assume zero trust.
I would highly recommend, not matter what type of account you are using, is to setup MFA (multi factor authentication).