I'm sure a lot of folks have said something similar, but it's super important, and probably bears repeating:
ALWAYS obtain property owner(s) permission along your route, which you should probably know fairly well if you're planning your flights.
(You are planning your flight routes, right?)
If you don't obtain property owner(s) permission for each property you fly over, you risk losing your drone.
My Drone Landed in Someone's Yard—Is it Theirs Now?
"And when it comes to retrieving your drone, it may come down to boring, old property law, which is largely jurisdictional. Common law states that whoever owns the property where your drone crashes can keep it, until or unless you come to retrieve it. In some places, statutes require that people turn lost personal property over to a government official, and if it has not been claimed after a period of time, the original owner’s rights expire."
So this is very much YMMV or "the law in your jurisdiction is probably different from mine" and most of us aren't lawyers - and even lawyers probably can't speak for your specific jurisdiction without research and a retainer.
And, obviously, you don't have to bring commercial, military and/or police air policy/law into it, as you're probably flying recreational, right?
If you crash your commercial drone into someone's property, you have insurance and liability and...blah.
Another article addresses this issue in greater depth:
Can Drones Fly Over Private Property? [And How to Stop Them]
It's not the flying over someone's private property that's the main concern, legally, because according to some legal experts you can't permit or deny people from flying over your property. BUT, if you takeoff or land from someone else's private property (and crashing is landing), they can sue you for trespass. Besides the fact that someone can take a picture (with GPS embedded) showing your drone on their property, your flight logs could be subpoenaed for the court case.
So it's always better to ask permission first, when you can, rather than risk getting sued and/or losing your drone. There's no guarantee you'll get it back if a property owner really wants to keep it.
P.S. Hope this isn't considered a "negative comment." I'm just trying to make sure you're aware of the liability of flying over private property without prior consent. I'm assuming this experience has taught you a valuable lesson regardless of the outcome.