Coruption Map on Minecraft Xbox one solo

For a few days my Minecraft Map On xbox one no longer works.

I was in the nether mining a tunnel, in the highest layers of the Map and I came across lava, I took a fire resistance potion and my connection to crash which made me leave my game . When I restarted my Map the effect disappeared so I tried to enderpearl on a block but I found myself in bedrock, I used my last enderpearl not to die in the block and the game crashed.

Since impossible to reopen my Map, neither a copy, nor in experimental gameplay version, I put the part in creative and impossible to relaunch the part

Attached is a video to show what's going on (the attached video is too heavy). https://youtu.be/OguBnj45KNk

Thank you for paying attention SuiveursOncle82(I use Google trad so they may have fault of orthography)