Why would someone put a shoe behind my car's front wheel?

I saw a video I think it was of a trick people were doing, putting a plastic bottle in a car wheel so when you move it pops and you get out of the car hopefully in a rush leaving the keys in the ignition and someone comes and steals your car. Could be the same thing with you thinking you ran over something and getting out to check.

Could of been there when you parked, just drive over it and you didn’t notice it when you got out?

The thing is, i'm not amazing at parking so i always go for the easiest spots. I always choose this one because i can drive straight into it and forward bay without having to turn the wheel and it is clear of most other cars that park closer to the store. I also had a clear view of the spot from driving in forwards. If I had reversed in then it would definitely have been possible, but i drove in forwards. The shoe was also perfectly behind my wheel not on its side or anything and right in the middle of the wheel. Luckily i do have a dashcam and will check it tomorrow! At least it can confirm whether the shoe was there or not when i pulled in for sure even if it doesn't record when the car is off sadly

Was the handbrake applied? It may have been gently moving out of the space

I wouldn't sweat it but as the other guy said, could have been part of a ploy so do watch out

Small but boring update. I looked at the dash cam footage (front and back) and the shoe was 100% not there or anywhere in sight when i drove in. When I drove off after seeing the shoe, i had a good 10 seconds of the bush being recorded (although it was dark and the further i get from it, the blurrier the image becomes) and i can't see anyone come out from behind it which makes me feel much better! I was thinking about the actual shoe and realised it was completely black (material and sole, better for blending in with tyres?) and looked brand new, i didn't see any kind of wear on it at all BUT i also didn't get that good a look at it so there may well have been dirt on the bottom. It was also unbranded with no logos on it (cheap to get run over by a car?). There was absolutely nothing else in the space or car park in view of the dash cam that would suggest i was being a target of theft, my mum said maybe someone was after my bag and not my car, like if i had put my handbag down when looking at the shoe? But i didn't stop to look and it and i was wearing a mini backpack anyway which didn't leave me until i was in the car. I think considering the dash cam footage, it was most probably just someone being stupid and my car was picked by chance. I think the position of the bush and the type of shoe are just really weird coincidences, but even so it's still suspicious and i'm going to be extra careful if i go there again!!