stolen 2018 Giant Rove 2 Disc

My bike was left leaning against the south side of my house from 2:30 pm Sunday, Aug. 17.It was not locked up. I was going to bike ride after dinner, but on short notice, went for a walk instead with my neighbour at 7:30 pm till 8:45 pm absentmindedly forgetting to put my bike back in the garden shed and locking up the shed. I live alone. When I finished my walk I entered in my side door, right beside where my bike would have been left, in which case, I normally would have noticed it and then locked it up, but I did not see it; Nor did I register that it was missing gone in my mind. I always leave it locked in my garden shed, but that day was a VERY unfortunate incident, it was a one-off. It was the next day, on my 7 am walk, when I was fresh in my mind, that I then remembered about leaving my bike outside and when I got home from my walk, sure enough it wasn't there. It could have been stolen , before my walk while still in my home, while on the walk when the house was empty, or in the middle of the night, but I think it was stolen Sunday in the evening when I was on my walk. My U-lock with key and cable was left in back black bag with key on rack. Bike also had a leather cream coloured pannier that was opened at seam (needed to be glued again)