In Microsoft Flow you can now easily see all your approval process states. Therefore Microsoft introduced the Microsoft Flow Action Center. The Flow Action Center is part of the Microsoft Flow web interface where you [as an user] can access your and shared flows.
The approval overview can be found in the Action Center, on the left navigation bar underneath “Action items”. There you can find navigation item “Approvals” which will display according contents on the right after you’ve clicked on it. You can filter the displayed approvals to distinguish the status a little bit better, the filter allows to differentiate between “sent” and “received” approvals.
Another option to quickly find a specific approval is to search for it by using the search bar on the upper right corner on the “Approvals” page.