So it was kinda lame, I'm pretty sure it was some sort of glitch or something, I even made a screen recording on my Xbox of it but, basically I put a bucket water over lava and it turned to obsidian. Started mining above me to get some iron and then gravel fell on top of me but instead of keeping me inside to gravel or pushing me off to the side, I was somehow shoved underneath the obsidian into the lava and died with all of my stuff. I was not playi in creative so the fact that I lost all of my stuff in this ridiculous sorta way is fairly lame. I later then went into a different world and on creative created the same scenario to see if I would be the same effect to see if in fact I just have the worst luck possible or if it was in fact a possible way to die. However when recreated the result was not that same that happened to me in game. So again it's super lame that it happened to me and I just wanted to let you guys know because if it's not an actual way to die on Mc then hopefully it gets fixed cuz it's really upsetting.