I searched most of those images, and none are really suitable because I need them in a really wide aspect ratio. The room is 2,60 (8.5ft) by 11,30m (37ft)
Most panoramas online are neither highres nor in a scalable aspect ratio.
If I could get someone to take a lot of individual high res pictures by phone or DSLR with at least ~50% overlap I could create a killer composite in photoshop which I could even straighten properly.
https://www.youtube.com/watch?v=QZFfJgRVqrE