Re: Damaged (during upgrade?) table, how to repair?

In any case I don't see you getting a 9.5 version on the laptop in the
package directories. Pretty sure the Fedora 30 repos will not have 9.5
and the Postgres repos don't go back to Fedora 30. So if you want a 9.5
instance you will need to build it from source in order to get a server
that works long enough to restore the 9.5 dump to so you can then use
the 11 instance pg_dump to dump in order to move to the 11 instance.