Is there a workaround to report on the Exits metric which is missing in Looker Studio?

[Sasch250]

GA4 has the metric Exits available to report on. However, this is not (yet?) available in Looker Studio.

To report on Entrances in Looker Studio, you can use Event Count of the session_start event as a workaround.

However, again the same doesn't go for something like a session_end event, which does not exist.

Does anyone have any ideas about a potential workaround while we wait for the Exits metric to be added to Looker Studio?