So I see a lot of issues here, all pilot error.
The first issue is you ignored your weak signal warning and pushed your drone further into an interference zone. The second issue is you never checked for windy conditions. The drone was fighting strong winds. You never lost control of it, you let go of the sticks, so the drone drifted around until it completely disconnected from the RC due to interference.
Considering the winds it was going up against, I would assume it isn't able to RTH. It probably got blown off course, on the way back. I can't possibly predict where it ended up.