I'm stil in a YouTuibe spiral from links youve posted eralier...Excellent results, given how little you have done with antennas at your QTH. This highlights how if something seems improbable, give it a try anyway. Unless you encountered marine telephony on LF it's unlikely you have done much with 160m. Yes the wavelength makes ideal antennas rather long but for FT8, all you have to do is make it resonant and give it a try. This will bring new knowledge and experience of propagation below 2 MHz.
You might find some interesting nets to listen to.
There are still the other bands, time of day, season, grey line and so on.
I'll come up for air in a bit