Of course a mechanic in a bottle fix would be wonderful; but that's just wishful thinking.
Having said that, I serviced a friend's ultra high mileage 2004 Civic that leaked oil pretty badly, at least for a Honda.
I think it was a crank seal... Don't really remember.
For fun, I added a bottle of the Barr's Oil Stop Leak during a service.
Surprisingly, it helped quite a bit; not 100% for sure, but maybe 60 to 70%.
For an oil leaker, you could do worse.
Just remember, there is no better solution than fixing a leak correctly by replacing the gasket, seal, etc.
Good luck.