I feel like the most irresponsible person everr😞

This was my beardie named Rowley he/she just passed today from his bridge smooshing him between a rock 💔. I’ve been bawling my eyes out for the longest rn and i feel like this could have been prevented and i wasn’t doing my job as an owner and i feel so guilty 😞😞. I first saw him under the bridge and he seemed to be cooling down from the heat so i left him alone to chill so i could go buy better substrate for him but when i came back i found out that he had been smushed. I very devastated because it hadn’t been long since my family got him and it’s very sad then he went so soon ..😕 (fyi his bridge was holding up by suction cups i feel really dumb thinking that it would hold up now)