Well, I’m sorry this happened to you, but here is what I can see.
I see one application of an authenticator, Oct 2020.
Never taken off or reapplied - appears to be the same one currently on the account.
Going back a month, I’m also seeing what appears to be two very different accesses - from other states. Given you have an authenticator, unless this was you on a VPN - it appears you must have granted access.
This appears to be account sharing vs. a traditional compromise.
While there are ways to get around an authenticator, they aren’t easy and very rare. Unless your phone has been compromised, I see no way of this happening unless it was you on a VPN - or you allowed access.